No.
If anything, Covid will depress turnout among old people - as we have seen in many European elections this year.
The assumption that this will be a historically high-turnout election is too early or incorrect, because just because a lot of people are voting early it doesn’t mean there’s generally high turnout combined with election day voters.
But most of the primaries this year have seen extremely high turnout even with COVID, in most cases historically high. Why think that the general election be any different?
