I have been playing dwarf fortress for about 7-8 years. If anybody has any questions feel free to ask me. I think the difficulty of learning the game is overstated: if you follow a tutorial, use a graphics pack, and use dwarf therapist (dwarf therapist is a must, most experienced players also use this because it's just a better UI) I think you can get the hang of the game in a few hours of play time. Probably the big…
The horrid military UI is inherent to the game. Bugs that are left for months (if not years) like the inability for seiges to enter your site (hiding just offscreen, slowly killing your CPU) or the current persistent bad memories, often makes aspects of the game unplayable WITHOUT the complexity and issues with mods that are necessary. Yes you can play the game in ASCII or with chopsticks or blindfolded with someone barking at what you need to do, but complexity and difficulty is not commensurate with fun or depth. DF is not the only game to fall into this trap.
DF has depth outside of the UI/setup/bugs, but onboarding is what Tarn is addressing (partly) in the Steam release. Good.
I think the difficulty of learning the game is on point.