YMCA Weight Loss Challenges are bad

There are also pie eating contests. Go live life and compete or don't compete in whatever you want. No ones making you and obviously enough people are into it to support its existence. When you start telling people who are minding their own business and not bothering anyone how to live, you've crossed over the slippery slope. How many awful things in human history began with one persons personal morals or crusade being projected onto to others; in the form of restricting their freedom, all under the banner of a greater good or brighter tomorrow? It starts with something silly and snowballs from there as dangerous thinking tends to do a small it gains traction.

*lose

HAES is thinly veiled fat acceptance, and that isn't healthy.

It's fine, the only concern would be trying to lose a large amount of weight in a short amount of time.