Positionals are a button you pressed to get more damage. Except unlike oGCD attacks or cooldowns, which are more or less static, you actually had to determine if you could greed them out on a fight-by-fight, phase-by-phase, and sometimes moment-by-moment basis. Some fights weren't very positional-friendly, and sure, that sucks, but it doesn't suck any more than a fight with timings that line up poorly with your cooldowns.
Combine that with less buttons needed from the removal of almost all of the oGCDs, and Monk plays *substantially* slower now than it ever has, GL4 be damned.
(i still kinda enjoy it tho, it's a million times better than shb monk)