Except act 2 is a cakewalk after the start, same as almost all of act 3. Not quite finished with act 4 yet, but while it did have a few more challenging fights (not exactly hard in comparison to act 2-3), but far, FAR from consistent.
Also just because people like the game in general, doesn't mean they like each and every aspect.
I do very much enjoy the combat as well. And would say it's probably one of the better games coming out recently (if it's your type of game, at least).
And removing RNG from combat is a very nice change, I fully agree on that as well. The implementation of the armour system is far from good, though. And certainly not the reason that combat is "consistently challenging".