Yes, for existing and future games. Game developers are going to give Vision Pro as much attention as they do with macOS or iOS. The best VR games will continue to require motion controllers. That's not going to translate well to hand tracking only or even at all. Most people aren't going to have a real club or gun or racket or whatever the thing might be. You call them ridiculous, but tactile feedback with motion controllers is a huge part of VR. Hand tracking alone obviously can't provide that.
Have you ever played any popular VR titles? It's pretty clear how big of a role motion controllers are in VR.