The switch is amazing in that I think it's the only device that is constantly in every generation. The 9th is the one I disagree with most.
If it's considered a miracle that the system can play a game from early 8th generation - considering it 9th generation is hilarious.
That said probably Switch. Cheaper and more of a game base.
What are you on about? What multiplatform games a platform plays doesn't determine if a platform is in a gen or not.