Your characters have limits in any raiding environment, Normal and Hardcore force you to get closer it. LFR takes you as you are.
And even if you couldn't piggyback on the few players, and I mean few, who are obeying mechanics and have at least their rotation spells keybound, Blizzard would intervene.
It's the nature of LFR, if everyone decided not to touch a button and completion rates dropped there would be intervention. That's the purpose of LFR.