I think in the big political (and even many of the non-political) subreddits, there is tolerance only for a very narrow band of centrist Dem opinions, and anything outside that band to the left or the right is heavily downvoted.

Is that the way that centrist democrats express themselves because the language and attitude comes across as extremely caustic. I considered myself a democrat for the vast majority of my life but now I no longer know what I am if that is the bar that is being set.