I just don't think this is true. Your base chance to hit a +4 enemy is 39%, you need more than the ED cap accuracy to make that 95%. Most sets give around 60-70% accuracy enhancement when six-slotted. You can get more accuracy from set bonuses, but nobody actually builds for that, they pick it up incidentally, and it's perfectly possible to have very few accuracy set bonuses in a build. Tactics is also great for Lore pets, which always spawn -1 to you, and can't be slotted for accuracy unless you take Nerve or Vigor Alphas.
My scrapper sits at 1.45x accuracy global, plus another 1.6x to 1.9x in individual powers.
The lowest that 39% is going to net me is an 80% chance to hit- which doesn't count that she never faces +4s due to being 51 effectively.
Even against +3s you have only a 48% chance to hit at base; that requires a 98% accuracy boost to hit 95% chance to hit. And there are enemies with defense, enemies with -ToHit, enemies with level shifts of their own; plenty of reasons ToHit buffs remain useful.