Dunno why people down voted you for asking, but personally while I love some of their games and the creative direction they take their consoles - they just have way too many anti-consumer practices.
From recent memory, they've DMCA takedowned YouTube videos of people playing modded versions of Breath of the Wild before Tears of the Kingdom released. This isn't the firs time they've DMCA takedowned videos they didn't like, including videos showing emulation in the past. Their online service, despite costing money to play games online, primarily relies on peer to peer networking when their console has a very weak networking chip, meaning most online games have to account for very poor connections. They have been very aggressive in shutting down websites distributing Roms for games that no longer have a way to be accessed or played. It stinks that you have to pay for their online service if you want any form of save data backups, and even those are iffy because they really don't want you putting it on more than one console. Their handling of joyconn drift has left a lot to be desired. They replaced them... Sometimes... And when they did you had to wait a while and usually the replacement would develop it, too.
They’re constantly suing people just for existing on a day that ends in Y. It’s just really twisted that a company that exists to make fun toys is so cartoonishly evil.
For me, it's their greed regarding old titles. I bought some older games on the Wii and/or 3ds stores. Well, those go away and you don't get a license for that same game on the new system (even though, presumably, all the porting/emulation work has already been done). Little things like that