> The omicron variant is milder than the previous variants so there’s less urgency to get the shot.

I welcome correction if I'm wrong here, but my understanding is that Omicron isn't actually milder. It's milder than Delta was, but it's about the same as the original strain. It seems so much milder because people are vaccinated now, have had it already, or died from it in one of the earlier waves if they were especially susceptible. For those who aren't vaccinated, catching omicron is about as dangerous as the original wave.