Xcom 2012 was a great game but the ability to overwatch creep like you're describing made the late game too easy in many ways. Other than the big space ship missions, you could spend the late game moving up tiny little amounts every turn, going into overwatch and just wiping out most of the enemy pods when they stumbled upon you. That strategy went out the door for the most part in Xcom 2. And honestly, that's a good thing. The late game in Xcom 2 (unless you use mods to make it harder) is basically a victory lapm once you have plasma rifles, a decent psionc soldier and emp bombs (to do major damage or disable gatekeepers and sectopods) it's pretty hard to lose. You either need to get insanely unlucky or make just an abysmal tactical decision to be in any danger of a squad wipe. To me, thats no fun.
The timed missions in Xcom2 are balanced and you can still play tactically 90% of the time. Yeah, occasionally you'll get unlucky with a bad map or something but that's part of the game. I feel like the people who complain about them are the types that just want to roll through the game without any real challenge