A lot actually. 2020 and 2024 are not the same political climate. For starters, the 2020 election was pre-insurrection. Since then, Jacksonville voters elected a democrat as their mayor. Abortion and recreational marijuana are going to be on the ballot as a result of citizens organizing; not their elected officials representing them.
Some people in FL are starting to wake up. It wasn’t so long ago that FL voted blue in the Presidential elections.
Either way, Biden didn’t need FL to win in 2020; as he displayed in the previous election. This would explain why no money was spent on any large scale investigation into the fraud. The outcome would have remained the same.
I’m not going to link every unrelated article that comes back after a search for “2020 FL voter fraud.” There’s a ton of projection coming from Tallahassee though.