I don't think it's even anything that major. It's just hard to act until you start seeing it in your community and the red counties tend to be more rural (less densely populated) and thus haven't noticed much local impact from this yet as it tends to get to those areas slower and spread slower in them.
Okay, so, the problem with that is that once folks start "seeing it in their community" it is far, far too late.
My office went to full "working from home" status back on March 13th. At the time, Massachusetts had a total of 123 known cases, and we were adding them at the rate of 15 per day. The Greater Boston area is nearly 5 million people. Nobody was "seeing" the impact of the virus at the time. The cases were 0.003% of the population - nobody knew anyone or had it, or even knew someone who knew someone.
Human intuition on when to act stinks for things that are not immediate physical threats. That is why we have put people in place who specialize in measuring the risks such issues raise. To then ignore those people is... really not smart.
I don't care if it is hard. We are the result of millions of years of evolution selecting for being smart. It is time to put on the big-person pants and act like it.