The "big political fight" here is that one out of fifty US states changed its mind, to be clear.
No, not really. There are a couple municipalities (Portland, OR, e.g.) that have famously not fluoridated their water forever, but for the most part this is not something most places argue about. UT is an exception.
I think most cities manage their own utilities. So, Portland has to make some decision on this issue. Utah doesn’t, it was an active choice to intervene.
downplayed? you judge.