Linux

Yeah, OP should probably add "Rust-based" or specific Epoch to avoid confusion.

like 5 years or more

They're really good & extremely dedicated devs with lots of experience working on it, so I think that's a little bit of an underestimation, I think it's within the possibly of getting there within 5 years, maybe not exactly 1:1 ofc. However, they've really put in a lot of thought into base of the project, and in my experience having a strong well designed base can propell future development forward much faster than initial estimates. Even now, they've been smashing mile stones much faster than expected and if they keep their current trajectory at a steady rate I believe it's possible the meet some level of parody within a 5 year goal. Ofc, anything can happen so only time will tell. Also, considering the fact that they're not having to deal with the X11 tech debt...