AIBU or is my DH being unreasonable!

You certainly are not being unreasonable. He is putting at risk not only himself but you and everyone else he has contact with. Perhaps if anti-vaxxers are treated like lepers they might get the message, but I won’t be holding my breath.

NotTooOld

Unfortunately, rosie1959, that is not quite true. There are plenty of vaccinated people in hospital with covid, so the risk is not just 'theirs'.

Just my view NotTooOld as I said I do not know the vaccination status of everyone I might meet in a social situation. So I have to trust my vaccination to protect me nothing is ever going to be 100%

Unfortunately, rosie1959, that is not quite true. There are plenty of vaccinated people in hospital with covid, so the risk is not just 'theirs'.

Unfortunately if you are going to wait until Covid has gone that is unlikely to happen it will always be with us.
I don’t necessarily know the exact vaccination status of everyone I might meet in social settings but as I am fully vaccinated then the risk is theirs
His friend is an idiot

The biggest concern here is that he is not respecting your feelings/concerns etc and is completely unwilling to compromise. He is putting you in an invidious position and it is not fair.

Your OH isn't considering your feelings on this at all. I wouldn't want to mix with the anti-vaxxers and if your OH is seeing them regularly he could be putting himself and you at risk.

I’m all for live and let live but I know I could absolutely not socialise at all with anti Vaxxers/Covid deniers. I think you have every right to stick to your guns on this one !

Well - he is being an idiot, as is his friend, but what can you do about it, short of moving house for the duration? Sorry you are stuck with this silly man.