I also let my first baby nap absolutely anywhere - on a sofa, in a bouncer, in the car seat, sometimes I'd put him in the buggy and push it back and forth, I don't think I even laid it flat. I never worried for a second about any of these things. This was much more relaxed. I have two younger ones (5 and 2) and so am aware of the more up to date guidance - I did occasionally let them nap in these things, but I was more anxious about it. I think safe sleep advice in general has gone a bit bonkers. I do understand there are higher risks from the inclined surfaces, and I would never have used one for a full overnight's sleep but I don't know what use came from me worrying for those occasional naps. I feel like the whole tone of sleep advice now (maybe just on the internet) is very, very fear focused and I don't think this is healthy.
That said I have been converted to the video monitors. I used to think audio only was better and that's what I had for DC1 and DC2 until he was about 2 and I borrowed one from a friend, DH was instantly converted and we got one with 2 cameras ready for DC3. It's helpful to be able to check if they are actually standing up in the cot needing attention or they are just crying in their sleep from a fart/bad dream which will sort itself out within a minute or so.
Likewise baby led weaning was brilliant in 2009 - remember Aitch and her forum?? And the MNer whose HV was highly suspicious and wrote "Mum has given baby human food" in the red book
and we all put pictures up of our babies covered in spaghetti bolognese and eating different things. It was so great because you had support from all other mums just doing their mum thing and no utterly loathable Joe Wicks thinking he has invented weaning and no overpriced courses to buy to discover how to chop things for different ages with a million complicated guidelines and no FB groups insisting totally mad shit like "if you have given your baby a spoonful of puree once you must completely stop weaning and start again or they will choke to death".
In fact when you put a photo on the internet before 2013 or so, you didn't have a million people jumping on you ready to nitpick every single thing they have spotted in the background waiting like an eager puppy for an internet point. (NB, I have been guilty of this but I've stopped doing it now). And (perhaps wrongly) we didn't worry about our children growing up and being unhappy about the photos, or about paedophiles downloading them.
And you could write a MN thread and be fairly anonymous and not expect it to go viral and get printed in the Daily Mail.