I played the whole game on the higher difficulties. In my opinion, it's waaay overstated here. It's fine, though you may notice it. Look back at the cross-section of reviews when the original release came out. It was on several "best of" lists.
i've been playing for 5 hours already and i didn't really notice any issues, really. Mostly, because i'm not going into Tomb Raider expecting twitch shooter controls.
Which doesn't excuse the issue, but it does set the bar a bit lower, because hectic combat situations are the exception, not the norm, in this game.
The QTEs themselves are super forgiving anyways.