Unfortunately, that’s never going to change. I’ve been part of more forum migrations than I care to remember, and I’ve never not needed the assistance of a programmer. Every forum migration is a beautiful snowflake. Different communities value different features, so you can’t just go “we’ll strictly support feature X, Y, Z” and call it a day.
Believe me, if there was an easier way to do imports, we’d be doing it already. Easier imports means faster customer onboarding 
That’s not to say there isn’t room for improvement. First and foremost, I’d love to see our migration guides get more love, especially the ones that don’t exist yet! We’d be happy to pay some technical writers for quality migration tutorials. I’ll put up a new topic for it.