If the person doesn’t want to work how will they sustain themselves? They have to rely on other peoples labor without contributing their own. If people don’t want to subsidize someone else then that person would either have to start working “against their will” or take other peoples labor without consent, which you have already pointed out, is not vegan. So if everyone were vegan that person would be compelled to work as they are able in order to be able to remain vegan.

Idk its kinda tortured logic when spelling it all out lol