I wrote about Dvorak a while ago on HN: https://news.ycombinator.com/item?id=8705543
Calling it hopeless, well, our opinions differ, that's for sure!
Also, so many things are built with QWERTY in mind. Games default to WASD and some don't even have the option to switch. Shortcuts are created with QWERTY and are sometimes awkward to change (vim) to match the design goals of the shortcuts.
All in all, it was a fun experiment. But seeing as I don't have any RSI/other hand reasons to switch, it's not worth the extra effort to use.
I found this to be the biggest issue with using Colemak or any other alternative layout. I use my own computers exclusively so I had complete control over using my layout, but it just got so tedious having to rebind everything all the time and I would often run into games and programs where you couldn't rebind keys at all. Trying to rebind keys to work in a sane way in Emacs was an uphill battle that never ended.
For a Linux alternative you can give IronAHK a shot. https://github.com/polyethene/IronAHK
Being lazy, meh, I'm also lazy. I just noticed that the brain continues to teach itself the dvorak layout after you stop practicing (for the day/week). That made it feel like I was just feeding it the right instructions, and that took almost all of the stress from my experience and it made me patient.
15 years later I can say, it was worth the frustration those first three weeks. :)