Probably not much change. People are just sick of covid, period. I got my vaccine and put my life on hold for the better part of two years now. We just need to move on with the fact covid will be here from now on. Some of this is getting to the point of ridiculousness. Last week, the WI Health Department told hunters they should wear masks because deer can get covid. I mean, seriously if I get covid from field dressing my deer after being fully vaccinated that would be something else.
If the science has changed so that the vaccines don't work against the new variant, then as awful of a situation as it is, people should be reasonable and understand why more restrictions are necessary. If it just kills the unvaccinated faster, that's a relief but also makes it harder to justify any more restrictions.
I hate to be so defeatist about this, but the lesson here is that if vaccines become useless five months after we get them (and we still have to follow the COVID measures even during those five months), then there's no point in letting COVID dictate our lives anymore. We've clearly lost the battle if that's the case. Don't you realize that if man can't vaccinate against this apparent super-virus, then we will just have to learn to live with it?
Again, I don't believe this is going to happen since we've been getting new variants to fear-monger over for nearly two years now, however,
even if it is as you say, most voters will still oppose any more mitigation efforts. If Omicron is the justification for more lockdowns across the globe, then I think we can expect a lot more rioting across the globe.