It's not the games, it's the dev who came out. It's just a joke.

They are very good games if you enjoy and incredibly good metroidvania platformer. Hollow Knight is the first one, it's great. It gets pretty difficult at the end.

Silksong is the sequel, it's also great, but also so much harder, too hard for me. I had to bail out about halfway through. Too bad too, they are both masterpieces, I wish I could turn down the difficulty and experience the full game.