OP is proffering a hypothesis that isn't necessarily accurate or true. I would suggest reviewing Dr Peter McCullough Dr David Martin and others on the subject.

In fact, there may not be any variants. They may be simply reading a subset of the existing RNA sequence and calling it a variant. The fact that our mortality rates have not changed year to year indicates to me that this pandemic has been overblown, excessively hyped and has ulterior (nefarious) motives.