Even with a PR backlash, providing the sums work out correctly. I have no doubt it'll happen, just a matter of when.
I like the idea of humans not having to do trivial work.
But I am concerned as to whether as a society we'll transition to "more leisure without reduction of living standards" or "higher competition to make ends meet, with the 'failures' being cast aside".
So far it is the latter.
Making fast food isn't a job "meant for humans", it's a job humans perform for the legal minimum of pay. The moment fast food chains can replace humans with Flippy without a PR backlash they will do so without hesitation.