Forbes BTW seems to actively support COVID vaccine use and efficacy. Your article tries to explain the important spike amino acid changes in the spike protein since December 2019. Mutations if you like, and the degree to which they get past vaccinations.
The whole idea is that someday one of the beasties will truly evade the current vaccine team: J&J, Sputnik V, Pfizer, Moderna, etc. COVID diversity is increasing:
This tangled mess shows what is meant by diversity - the family tree. It takes special software to make sense of the data behind the graphic. Nextstrain has links to some of that.