I wouldn't trust an amateur citizen hobbyist to tag an animal population in a humane manner. There's no accounting for how the tagging is performed, or when the tags get removed and by whom.

If one person does it, others will justify their own efforts to apply tags to wildlife, and then we get into the legalities of animal cruelty, poaching on conservancy land, and on and on.

It's one thing to crowd source passive eyes spotting for squirrels. It's entirely another to invite people to try and handle them, and even interfere with instruments applied to their body.