"People get pissed off even by small changes" is a MUCH bigger impediment towards real progress than "people are making small changes that won't fix the whole world" is.
I don't believe most of the people who say they're only problem is that the change is "too small." I think that's just an excuse of convenience to resist any change or challenge to the status quo. If your problem is that the change isn't big enough, the solution is to push for bigger ones yourself! But that's not usually what we see those people doing...