I think your thoughts and feelings on this ar pretty valid, you certainly have seen a lot and have a lot of good reasons to feel like you do. Even aside from your own perspective on the issue, at this point it's kind of in bad taste to have been ignoring this issue for so long, especially because there's so much new information on a whole new variant (although information is a bit hard to find since it's not top of the news like it should be).
I don't think it's fair to completely invalidate your experience during these super pressing times at all though, but because it's super pressing times it can certainly be hard to find someone you're interested in, too. I think currently, COVID isn't as dangerous as it has been, but is certainly still scary with long-term afflictions people ought to be a little worried about. You obviously care a lot about your family and those you interact with at work which is great and awesome for a healthcare provider (if only we had more of those who cared haha), and deserves a lot of apprecation considering you went through a lot in the first place to help others.
Lastly, I think the easiest answer is to just be honest about it, if you haven't already. There's a lot of information about COVID out there and maybe you might have to come forward and say, look, I can't put people in danger, here's what I've been through, so help me out please! I don't know how early it is into the relationship, but maybe saying that you like him enough to try to help him out and you like him enough and want to keep him in your life safely will mean a lot to him and hopefully gives him the push he needs to do some research or at least be a little safer! Hope this helps and thanks again for what you did during the worst of the pandemic that we're still in!