Just wanted to start by saying that I understand the concept in it’s true form, and can totally see the benefits. However...
It’s seems to be just a bit of a trendy explanation for spoiling your kids and letting them away with murder!
My niece (6) is a bit of a handful, to put it mildly. There don’t seem to be a lot of boundaries at home and she’s learned over the years that if she kicks up a fuss when told no, SIL gives in. To deal with the tantrums, SIL now just says yes!! This involves telling DN she can sleep over without asking me, letting her take toys my DCs are playing with and so I’m. Cue lots of Instagram posts about letting her little diva (her words) make choices and know her own mind, followed by #lovebombing.
Last week I was looking after DN. she drew on my walls. I told both her and my DD off at the time as it was unclear at first who the culprit was. I received a text from SIL later in asking me not to tell her daughter off again as she practices lovebombing 
Social media posts filled with designer clothes and massive hauls from build a bear, always with a #lovebombing! The same for days out/swimming lessons/trips to Starbucks!
I’ve used SIL as an example but I see it a lot. AIBU to find it infuriating? Raising a spoiled and entitled little madam surely isn’t the aim of the game?
I feel better already getting that out of my system 