Well, the level of protection actually looks dubious, given that millions of people get sick, protection by 76 percent reduces the overall picture of the incidence weakly - maybe it only slows down the spread of the virus a little. In any case, this does not look like a "final solution" and a way to defeat the virus.
By the way, what will we do when the next strain appears, against which both Modern and Pfizer will be even weaker?
Do you have a solution other than vaccination? Even an efficacy of 76% is significant. That means four times less people who are infected with the virus. And that also means that the spread of the virus can be contained, as the infected are less likely to infect others. If you look at the current situation in the United States, the regions with largest number of active cases are states like Arkansas, where the vaccination rate is very low. The chances of further mutations decrease, if there are less number of carriers of the virus. So even a 76% reduction is OK for me.