I am pretty sure you're wrong. Here's a tweet from 2021: https://x.com/flibitijibibo/status/1416118465442852869

To quote from down the conversation:

> @flibitijibibo (Jul 16, 2021): Don't look at me - I'm just trying to figure out how much time I have left, either way it's pretty clearly finite

Also some anecdata from someone that pretty much bought all native linux releases from Steam since the linux version was released: in the past 2-3 years there were barely any new ones, outside of Valve's own titles maybe.