This is very true. When these ideals were created, we lived in a different time. Now the left has gone so far left that their opinions have reversed. It reminds me of recently when it was revealed that Martin Luther King stood and laughed while he watched someone get raped. It should be a huge deal to the left because he is supposed to this huge figure in liberal thinking. The modern left, however, is now so far left that a few would probably call him an alt-right Nazi. He advocated to treat everyone by their character while the modern left insists you should treat people different based on race and class. So because the "treat everyone equally" ideal is no longer relevant, MLK's actions are no longer relevant.  We see the same thing here. HAES was supposed to counter the idea that fat equals unhealthy by insisting that you shouldn't judge based on appearances and that you can overcome statistical likelihoods with a good lifestyle. As you say, though, they have slipped so far that even making a token effort to exercise is too much to ask. Now the original HAES line that "fat people exercise and eat salads, you know?" is bigoted because they would claim that a fat person shouldn't have to exercise to justify themselves.  I believe this is the result of an ideology that never had a goal in mind in the beginning. There was never a defined end point, they just wanted to attack the status quo and "deconstruct." They did that, but because all of this was just projection of internal self-hatred, they are still deconstructing and attacking to the point where they are attacking their own attacks.  TL;DR: Honk Honk.