Even here in Utah , we have a senator who is so hypocritical that he's protesting mail-in voting even though we have been voting this way for several years. Sen. Lee even introduced legislation to punish MLB for moving the All-star game out of Atlanta. Even though the Mormon church has been tax-exempt and they play separation of church and state real close to the line and are playing a game of self destruction, just like the other zealots who can't accept that they lost the election and elections have consequences.
In red states where mail in voting had been historically done, this could hurt some GOP candidates. If you remember Arizona, as the mail in votes were counted, it got closer. Stopping mail in voting in those states could help democrats. By 2022 the pandemic will not be an issue, hopefully, people won't be as reluctant to go to the polls, of at all.
To me, things like early voting , mail-in voting etc.. is what the constitution has in mind with "a more perfect union".