True, Linux will just grow. Stuff like WINE or Proton are getting better every update and can make the performance higher. Just look what happened recently, Roblox started working on Linux after WINE got updated, Roblox staff said that it will take a lot of time and money to port Roblox to Linux without creating performance issues, now look, WINE made it work and everything works well (Except right click, but there is a fix on that issue).
I know that Roblox is not anything even close to Affinity, but it just shows that Linux users will always find their way, and that the Linux will grow. By the thing that happened to Roblox, people switched to Linux because they finally can play and develop Roblox games.
It is a question of time when there will be any breakthrough in development of WINE or if there will be some new great compatibility tool.