You're not necessarily wrong, but the vast majority of recent WINE developments have been going into making it a much more stable experience. The past decade of WINE development has pretty much been about throwing the kitchen sink at your program and praying that it works, but companies like Valve have made some pretty wild overhauls to the system that allow for both leaner
and more predictable prefixes. It's still not perfect (and as you've suggested, will likely never be), but the gap is definitely closing. We've gotten to the point where people are confident shipping Linux consoles because the Windows compatibility layer is just
that good. Game studios are able to support Linux-based platforms without targeting a build for the OS in the first place. As the technology continues to be refined, I can definitely see some CAD and studio software developers experimenting with the tech.
Much like you, I'm pretty pessimistic about the whole thing. It's safe to assume that nobody cares about it, but it's also still too early to say for sure. In 5 years, WINE could well be a stable development platform for third-party developers who want to focus on a Windows build but also offer compatibility with other operating systems. Stranger things have happened.