Absentee voting only became a thing during covid. It's not as though millions upon millions have been relying on it for decades. Although having said that, I'm one of the millions who have used it since the last redistricting because my voting precinct was 17 miles in the wrong direction...
Whatever rule changes come about, if you want to vote, you probably can. I'll still vote absentee, I'm a senior and I'm disabled. But if DeSantis changes the rules, my precinct is now 4 blocks away and I'll happily wheel down to the polls come November.
I'm entirely in favor of a vote-by-mail system but not everyone agrees and not every state makes it available to everyone.
Partisans turn every little thing into a mantra and hype it to death.
every. little. thing.