in a constitutional state mandates should not be arbitrarys, that's a defining characteristic actually.
so either you have seatbelt laws and vaccine mandates, or you have no vaccine mandates, but also don't enforce seatbelts.
then if you decide to enforce seatbelts, where do you stop? smokeing, obesity, extreme sports, going outside without a proper reason ... you needed to outlaw all of these "risky-activities" for the good of society then!
Rather than saying if we mandate one thing, we should mandate everything, we could just evaluate each of them individually. And since that's what we actually do, and these decisions are made by different people at different times (because of elections, appointments, etc), some inconsistency seems inevitable.
If people can't separate emergencies (temporary) from other conditions, or the things that only affect one person from those that affect society, and use the virus and vax campaign as an excuse to reduce individual choice in a permanent way - by of all things, tying it to laws against harmful personal vices or other stupid choices - they will be speaking to their own echo chamber of fellow virtue signalers without accomplishing either of their supposed aims.