At one time the people there were mostly conservatives.
They probably still are. Don't equate the HOA with the general community.
I live in a condo development and the volunteers for the HOA are typically the busybody type and those most eager to write up enough rules to fill up a telephone book.
One of the rules in my community is that you may only hang a Christmas wreath on your door between December 17 and January 8th. A subsequent rule amended that rule to change "Christmas Wreath" to "Holiday Wreath."
Yes, the busybodies are at work and they love walking around the community with clipboards to record any infractions. This is what they live for. I was cited once for having a patio plant several inches too tall. I had to take my scissors and cut it down to size.
All in all thought, I like my community. The upside to my not being able to fly a Trump flag from my doorstep is that my neighbors are similarly not able to fly a Biden fag.
I can live with that. And when I retire, I would very likely end up moving to The Villages down in Florida.