Exactly this. Personally, I would extend the argument to include the online hand-wringing about bitches like Tess Holliday "promoting obesity." Trust me: no one with a healthy, fit body — or even a normie body in a proper weight range — sees Tess Holliday landwhaling about on magazine covers and suddenly decides to become a fatty, let alone a deathfat. Deathfats are already fucked in the head and if they're the sort of deathfats who are inclined to go full fat activist and make excuses for their deathfattery then they'll find each other and make their own movement, Tess Holliday or no Tess Holliday.
Deathfats have a freakshow quality to them and I can understand responding with curiosity and revulsion but all of these busybody do-gooders pretending that they're saving legions of fit, athletic children from going down the road of deathfattery are ridiculous. People who are in shape and know the joys of a healthy body don't suddenly aspire, individually or en masse, to become deathfats just because they see a landwhale in the media. Just say that deathfats gross you out — as they quite reasonably gross most people out — and be done with it.