@Alltheleavesaregreen1 the reason I say , telling someone you're not attracted to them after their weight gain, is OK - is that it can be changed.
If my husband in 15-20 years comes to me and says he doesn't like my aged face, what can I realistically do about it ? Nothing
So what would be the reason for telling me???
However weight management is very much within my control. Yes it's not easy. But it is quite simple.
If My husband came to me and said he is no longer attracted to me because I look older, what is the solution? I can't do anything about it so I'd he telling me he wants to end the relationship?
Whereas op husband is telling her about her weight as he DOES want to continue the relationship.
So one (aging) would be said cruelly, and weight not, because of the ability to change and the husbands intentions (what is he trying to achieve from the comment)
This is why they are not the same.
But yes TECHNICALLY a husband can tell his wife he isn't attracted to her older face, attraction isn't a choice, but it isn't a swap for swap scenario for this situation for the reasons I have mentioned. And I would consider the husband an asshole for that. An honest asshole but an asshole nonetheless