After the 538 meltdown in 2016 and again in 2020 it’s no wonder why we can’t trust the polls anymore. In our modern age we simply can’t rely on randomly calling people on the phone anymore.
Having said that Trump simply can’t win. The “base” keeps shrinking (they keep dying). Independent keep moving away from Trump. He’s a known quantity and people simply don’t want to go back to that chaos. Once campaigns and debates start it will become quite obvious that people won’t vote for trump. Biden has brought so much stability.