In my opinion, those statements are both inaccurate.
Extra attacks are the best way martial characters can compete with casters for multi-target options. It's not unbalancing if done right.
Also, 4E did not steer clear of multiple attack rolls. In addition to requiring every player to make attack rolls for every attack power, including close/area powers and two-weapon powers, 4E piled the action point mechanic and free action attacks on top of that.
I like the easy multiple attack rolls in 5E with modifiers that do not vary wildly like they could in older editions. Makes it easier.
... in my opinion.