I found the exact opposite and this was harder than Copied Factory. Factory mechanics were all easy to figure out blind. Bunker has a few that aren't too straightforward (but seem easy once you do realize the trick). I still don't feel I have every Bunker mechanic figured out for certain.
Still not "too hard" by any means. I think player expectations have become a bit warped by how any content below EX is viewed as a faceroll free win. They expect a one-shot run with easy mechanics and become frustrated when they can't seem to figure it out. It's absolutely normal to die week one in here. I've been seeing plenty of Savage players getting wrecked by all sorts of mechanics in both Bunker and the new Trial on Normal.