Until there is more consoles in "gen 9" then yes "gen 9" doesn't exist.
We can't categorise Switch into a generation before we have information for whether it even belongs in said generation.
As it stands it's plausible that Switch could be:
Closer in release date to ps4/xbo then ps5/xb2.
Share more of it's software library with ps4/xbo then ps5/xb2.
Spend most of it's life against ps4/xbo before the launch of ps5/xb2.
A generation with a single platform is meaningless, currently there is no such thing as generation 9, that'll be determined at a later date.
But regardless, console generations as a whole will be dead soon enough anyway.







