it will depend entirely on the personality of the supposed celebrity in question and the niche the person is. imagine telling a footballer that usually gets there endorsement from betting companies that because he is a celebrity that he should not promot such companies? how feasible will that even be? by default, those are the kind of brand that will want to work with him so you can not even tell such a one not to promote or get himself affiliated with such a brand. so many content creators that are the most common celebrity in m yregion are brand ambassadors to a lot of gambling platform that lacks repute. those guys do not even consider what the public are saying because they generally owes no one nothing. the only thing is that at your end, you do not just use a platform just because it is promoted by a celebrity. most of hem are just promoting the platform but are never making use of it.