I think the people that still think Stadia is gonna shut down any time soon are just the gamer blogs/communities that have been running shutdown rumor pieces every month or so for the last 3 years. (Most recently the killedbygoogle guy's "my friend heard on facebook that Stadia's shutting down..." post that went viral.)
Stadia's actively signing hardware deals with Samsung/LG and other smart TV manufacturers, and about to expand availability to even more countries. AFAICT most people that actually play on Stadia don't think it'll shut down any time soon.