Is there even a Linux community that could express what it wanted from desktop linux in unified, actionable message? I rather doubt it. I mean, the fact that GNOME and KDE still exist as separate entities after 20+ years seems evidence enough.
Some people seem to want a deep-pocketed daddy to come and fix it, but even if such an entity existed, I fail to see how they would achieve any return on their investment. And the community is so fractious/holds such high standards (take your pick) that whatever they do is sure to be criticized from the first byte to the last. It's a rare PM who would relish that fight inside the executive suite and out on the mean streets of the mailing lists.
Other entities? Eh, not so confident. Bodies like the Linux Foundation feel like places where projects go to die (corporations pay a small tax to get a Gold badge, dump some deadweight code, take some tax relief, and burnish a resume). Not seeing any mileage here.
Smaller UI shops like Zorin and PopOS? Doing the Lord's work cleaning and polishing, but in the absence of a clean and stable set of interfaces, it's all very fragile.
HW vendors have no incentive to care since desktop linux is a tiny market. (I find the requirement that desktop linux must work on anything mystifying because there are probably only 5 pc makers that really matter in terms of volume and anyone else can wait and see before committing.) If you are dell, all you really care about is linux on poweredge, and if some weird state government insists on linux to you, well, fine, youll freeze the BOM on a few rounds of Dell Latitude, charge extra, and it'll be fine.
It would be a delicious irony if the best Linux desktop environment ends up being WSL2 after all these years.