I always feel bad for the developers of the better GUI Linux tools. It's not fair for people to compare solid efforts to commercial software with solid funding and huge userbases for feedback. Some of them are their own worst enemy, but most really do seem to try.

No, [Ardour, LMMS, Darktable, ...] aren't going to do as replacements (for the nth time), but it's not at all their fault. I also don't fault them or Linux as a whole for the people who badger about it while ignoring the needs of the person they're pestering, but not everyone is able to make that distinction, and it comes to reflect poorly on the software.

As for ports of the stuff I do use, it seems the fault is in the lack of cohesion. It's not free to assign developers to port to even a reasonably narrow subset of toolkits and libraries to target the most users, and having a lawyer go over the licenses to see about packing it in costs money. And they're not likely to ever recover that cost in sales: the people who want it are already using the Windows or Mac version, and the people they might sell to are already productive and skilled with Linux options.