I mean, there definitely was a time on the internet that (depending on where you went like LiveJournal or MySpace) you'd definitely run into places that identified as "pro-ana" and did teach people tricks and tips on how to suppress hunger or which exercises burned the most calories. The difference between this and HAES is that people in the pro-ana movements largely grew up, realized the damage they were doing by spreading this shit and moved on with their lives. Those who didn't either went so far "underground" in locked forums that they're only really talking to a tiny fraction of the internet, or they largely just keep to themselves. Like someone said, Anorexia and Bulimia are mental illnesses but imagine if they were treated as a societal trend. No one has "glorified anorexia" since like 2001 and it's time to move past that one time someone said something meant to them in grade school about looking like a mini-moon tbh