I agree with you that we may not need PCs in a few years, but I also think gamers will continue using them. We keep seeing PCs with better specs all the time, so I don't think they are becoming obsolete anytime soon. Is it probable that they will keep getting smaller in size but with more powerful processors?
I feel like that's where the laptops are going. PCs have always been the ones to change in everything but size. In terms of Bluetooth compatibility, it seems like portable gadgets get an advanced system because of their nature. I'm happy either way since now I know I don't need to rush to get the latest Bluetooth version because it's not going to affect my experience that much.