At first you might think this is shit but if there are a bunch of people my age trying to virtue signal about being vaccinated I'll know they're crazy and to avoid them, even though online dating is shitty I think it's really just a reflection of the kind of people that are out there generally and stuff like this helps you to filter them out.

A good example of quantity over quality.

Just typical social media bullshit. Doesn't apply to vaccinations completely. If it were some other thing everyone was getting they'd offer the same incentive.

Is it legal?