Fair points but I still think there's one "desktop" project they host that should not only be supported and get fundings, but be one of their top priorities: Servo.
I think it's crucial not only for the Linux desktop but for the future of the open web. It's has the potential to be a great web renderer engine (it's built atop Rust) and, with good support and development, in the middle-long haul it could be a serious, community-driven alternative to the hegemony of Chrome/Chromium.
After Mozilla ditched it due to the abhorrent administration they had, it went to The Linux Foundation. Afaik there's no more paid people working on it nor working on it full time as it was when it was under Mozilla. With its enormous funding it's insane that Servo has to look out for its own fundings.