It's not clear, but this doesn't look greatEven the virus which causes AIDS, is less deadly than it used to be, typically taking about 10 years now to kill the host instead of 12. Highly infectious coronaviruses have a much higher probability of random mutations occurring, I think it's likely that the deadlier ones will mostly die with their hosts. From news I've seen thus far - Omicron at least, doesn't seem to be deadlier, merely more infectious. But you're right... anything can happen - I was being hopeful, which is why I said "Whether rational or not", and "generalising here". Progessions of various elements of pandemics, look like (or are represented later as) differential equations... and those can look very bizarre indeed.
"COVID-19: Emerging picture from South Africa suggests Omicron variant could be real cause for concern | Science & Tech News | Sky News" https://news.sky.com/story/covid-19-emerging-picture-from-south-africa-suggests-omicron-variant-could-be-real-cause-for-concern-12484064