Yes, this is a known “issue” with the campaign, they’ll most likely do a balance pass closer to 1.0 (or even 0.9 for multiplayer 'cause that’s certainly going to throw a cat amongst the pidgeons!). They have been increasing the difficulty of the newer chapters as they release them, there were many, many threads complaining how difficult Lagon & Majasa were when they were released, but finding a sweet spot where most people find the campaign challenging enough to be interesting but not too much of an obstacle to progression is probably quite tricky.