There was a brilliant post on reddit the other day actually by a user called LittleBananaSquirrel. She said this:
I had my first baby over a decade ago. Back then everyone was talking about how gentle parenting, anti sleep training, baby led weaning, extended rear facing, cloth diapering ETC were these against the grain, revolutionary things that new parents of that era were pioneering and going to change society with. I had another child soon after and then was out of the baby verse for like 8 years. I get pregnant with my 3rd baby and of course my socials all start targeting me with the new generation of parenting experts and influencers, many of whom are first time parents to babies or young toddlers and lo and behold we have a whole new generation of Moms who think they are revolutionizing gentle parenting, carseat safety, anti sleep training, cloth diapering ETC like nobody has before, they are breaking new ground and scandalising older parents who obviously did everything completely the opposite to them. I'm just here like... Why is everyone pretending this is anything new at all? Just because you weren't a parent until recently and therefore probably didn't think much about any of these topics at all doesn't mean they weren't very much alive and well before you came along. My sister's eldest is 20 and besides the extended rear facing, it was all the exact same stuff back then too, nobody is revolutionizing anything 🤣
The only thing that has actually changed between my 1st and 3rd are some cool new gadgets, like a shnuggle pod bath I would have LOVED with my older kids or my newborn sized ergo instead of having to use the annoying inserts with my ergo original.
Having had babies in 2008, 2018, 2021, I absolutely concur!! I think there is a huge aspect of this in gentle parenting. And I know I was guilty of it too. It was actually one of these MN threads where someone said "So you treat children with respect, have reasons behind rules, don't hit/try not to shout, talk to them, see their point of view....... that's just parenting then?"
And I said YES, YES, now you finally get it!! (my point at that time being that GP was not some magical special unattainable thing, it was just normal) And then I realised that I was the one who had something to realise 
I think there are lots of parents who read and use "gentle parenting" advice and think it is useful and quietly get on with it without making much of it at all - they are probably the ones who gentle parenting works well for (and maybe they get a bit fed up/confused on threads like this but they aren't the loudest voices) and if it didn't work then they just try something else since they haven't hung their entire identity on an internet buzzword.
It might be less the gentle parenting mindset in general (which, as said, not one specific mindset, much too broad) and more the tendency for people to jump onto a bandwagon and think that they have discovered something new and revolutionary, and become an evangelist about it.
I do disagree slightly with the reddit poster on one point. I think the parenting internet of 2023 is a much more divided, polarised, tribal-thinking place compared with the parenting internet of 2008/09 (maybe up to about 2013). Or maybe I was just lucky in that I had mumsnet, where we used to have bunfights but everyone shared the same space and could have a discussion and there was some balance, even if you thought others were totally wrong. Now there is a FB group for everything and the FB groups are a totally unregulated space which seem to spawn their own kind of special weirdness where people pick a stance and then get competitive about how stancey they are. So you get people proclaiming all kinds of made up rubbish in experty tones, even though they are just parents, and people somehow go along with this even when the original info gets distorted beyond any reasonable sense. Old hats on MN might remember the Baby Led Weaning forum that Aitch set up, and the "vicious debates" about whether it counted as BLW if you sometimes used spoons. There was occasionally someone pointing out that really, purees teach them to swallow first and chew later, whereas BLW teaches them to chew first and swallow later. Neither of these things are absolutely true, but it was quite an interesting thought/useful way of looking at it. But if you go onto the BLW facebook groups today, there is a whole list of rules and a load of lore about this idea, to the point that if you have a baby that you have ever given spoon feeds to you are supposed to totally stop weaning them for 2 months in order for their palate instincts to reset in case the combination of self-feeding and spoons causes them to choke because they got confused about which order to do it in. This is BONKERS and has no basis in reality. It's not in the original BLW book (of which at least there is one). I'm not aware that babies' palates will reset. I don't think it's even a good idea to stop weaning for months at a time, unless you've started much too early.
I think probably the parenting internet of the 00s did start this with all the terms (BLW, EBF, ERF, NCSS, etc etc) and the camps but it seems to have reached a whole new level of unhealthy/ridiculous today.