A lot of variables and uncertainty. You have to remember we live in a bubble of people ultra-focused and attached to the news. Many others aren't as focused yet. As we get closer and election season is the top story of the news cycle, I expect polling to shake out in a different direction.
To help illustrate: the election is 10 months away. 10 months ago was February 27th. Back then, there was prominent argument and speculation that Ron DeSantis was the future of the Republican Party. Look at his polling now.
1) Biden will preside over a resilient and growing economy and a long list of legislative accomplishments, many of which were promised by Trump and were never enacted.
2) Abortion rights will be a big part of the election cycle and 60%+ of Americans oppose the Dobbs ruling. Trump has made it clear that he takes credit for Dobbs.
3) Polls (with the caveat that I believe they are flawed currently) suggest conviction switches a non-trivial number of Trump-friendly voters into the undecided or Biden column.
4) Overall poll toplines are currently flawed, many only use registered voter screens, and seem to overstate the number of 2020 non-voters that will vote in 2024. In reality overall turnout will be much lower in 2024. Additionally, about 50% of voters appear to be in denial that the matchup will be Biden vs. Trump.
5) Trump seems to think he has this in the bag [0] and will make even more extreme and reckless statements as the election cycle goes on.
To help illustrate: the election is 10 months away. 10 months ago was February 27th. Back then, there was prominent argument and speculation that Ron DeSantis was the future of the Republican Party. Look at his polling now.