In general I've just been really shocked at the backlash to Marie Kondo. I found her books extremely charming, and some of her suggestions that seem weird to other people (the thanking objects for their service thing, in particular) really resonated with me, and helped me get rid of stuff that I wasn't using and wasn't going to use, but was having trouble parting with for whatever reason. And some previous methods I'd tried (the "throw everything you're considering in a box, and if you haven't thought about anything in it in a month or two, get rid of the box without opening it" method) resulted in me getting rid of stuff that was important and I did regret getting rid of.
I can't think of any other "cleaning guru" who's gotten this amount of backlash. If her methods don't work for you, don't use them? But there's no reason to single her out for criticism, when she's one of a thousand organization personalities out there.