Any dressage forum that is open to all is going, from time to time, reflect a current basic split in the dressage community between, for lack of better terms, “contemporary competition” and “classical” dressage.
These might as well be two different disciplines at this point. They have different goals, different training progressions, and very, very different ideas of what the finished horse should look like: very different ideas of the picture, the outline, the posture, of the horse. As different, let’s say, as between hunter and Western Pleasure.
It might be time to acknowledge that “contemporary competiton” and “classical” dressage are two different forms of riding (though of course you can compete a classical horse) with very little in common, except that both of course want to claim the name “dressage.”
So the only way to avoid the debates is to go to a FB or closed group that focuses on the kind of dressage that you do, as several posters have pointed out.