re: GA *voted* for Biden. I don’t know whether to laugh or not.

At the end of the day you're guess (or hypothesis) is as good as anyone else's. But to the particular point of the possibility of suburban Republicans being turned against Trump: How does one reconcile the fact that he increased his 2016 overall vote total by 12+ million in 2020, yet somehow "hemorrhaged" as they say such a consequential number of those suburban voters? What could possibly be the demographic makeup of that 12+ million increase when such a prominent category of active voters (suburbans) decreased? What's the makeup of that 12+ million??