Having gone through the Voron build, I would call it long vs hard. I am mechanically inclined and have crimped wiring before though.

Mechanically, if you're not intimidated by IKEA furniture you'll be fine. You do need a largeish flat surface to get the 2020 rails to all be flat when you snug them up, but a kitchen counter will do if you don't have anything else.

Wiring wise, if you're willing to spring for a ratcheting crimper with the correct die size for your terminal and wire gauge it becomes foolproof. If you use a non-ratcheting type grab some extra wire and terminals to practice on. Too lose = poor connection. Too tight = you'll break the wires.

The Voron docs are pretty easy to follow and their forums are pretty solid for help. They also have a discord, but I'm old and prefer BBS style posts.