It depends whether it confers immunity to other variants, and how long it lasts. If it’s good at that, it is so transmissible that quickly everyone will get it

It depends whether it confers immunity to other variants, and how long it lasts. If it’s good at that, it is so transmissible that quickly everyone will get it (the fabled “herd immunity”) and new variants, unless they break the mould, won’t have a large enough population of o sustain themselves in. Otherwise, maybe we’ll enter into some kind of equilibrium, where there’s enough of not-terrible Omicron to keep everyone “topped up”, equivalent to permanently high vaccination levels. Or, none of our happens and as you say, the next variant is more transmissible and more deadly, and we’re screwed again. Re France, new variants pop up all the time, if it’s the same one I read about, there’s no indication that it’s special right now so for now I’d say clickbait.