Oh, I get it!
About 15 years ago I went through a life change. I was living on little money, and had lost my career direction and my health. I adopted the mantras, "Less is more" and "Live simply, that others may simply live." Voluntary simplicity. I'm still getting rid of stuff, but have pared down very greatly.
Then about 10 years ago I married the lovely man I'm still with. Unfortunately he was a hoarder (in my view) or a collector (in his view). We had to sell his car and his home when we moved into a smaller home and combined households. It was like pulling teeth. He is now in early-stage Alzheimer's though and I have been successful in offloading lots of his things, sometimes with permission, sometimes just knowing that he won't miss them. (Have not been wrong so far.) He still tries to acquire stuff but I can usually dissuade him, letting him buy something occasionally because it pleases him.
Anyway ... the thing about Marie Kondo is, I don't need someone to tell me to do these things, I just need to do them. And I have. There is something kind of fake about her, maybe not in her own culture (I wouldn't know) but when she comes on an American talk show and speaks extremely fast (as if rattling off a spiel) and then grins cutely, I ain't buying that. What Brightonpete said kind of agrees.
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A finger in every pie.