I don't really understand the backlash against the idea of faithless electors keeping Trump from getting to 270. It makes no sense to me to accept the math part of the elector college but not the elector part. Both are pretty weird and undemocratic.
The whole "electors honoring their state's vote" argument is weak considering the idea of electors was a kind of "break glass in case of emergency" idea. If 270 electors don't think Trump as president is an emergency, fine, but if not then this is the exact situation the electors were designed for.
It's also worth pointing out that several states have passed laws that would direct their electors to ignore the state popular vote and vote with the national popular vote if 270 EC votes worth of states pass the same law.
I get the backlash from a partisan standpoint and even from a political strategy standpoint, but not from "an affront to democracy standpoint."