Especially given the current evidence suggests a possible landslide for Biden. The Economist currently gives Biden a 7 in 8 chance of winning the Electoral College and a 19 in 20 chance of getting the most votes.
Five Thirty Eight currently gives Biden a 77 out of 100 chance of winning compared to Trumps 23 out of 100.
THe obvious caveats that these forecasts can and will change and have changed in the past. Things had narrowed around the conventions but Biden has regained his lead prior to the conventions over Trump since then.
But yeah, like you said, Trump could well win but the odds seem slim of that given Trump is a known quantity now, has never broken an aggregate 50% approval rating his entire time in office and done little to try and grow his base. Trump is his own worst enemy because he's so polarizing most people made up their minds about him a long time ago.
Charlie Cook wrote an op-ed where he argued that Trumps support ceiling is too low for him to win reelection. He also had an op-ed in the past that the whole reason the press is acting like this is a close race is in no small part due to scarring/trauma from 2016 and the polling issues then. Polling at the time he wrote the op-ed also gave Biden a 48% favorable rating to a 43% unfavorable compared to Trumps 40% favorable and 56% unfavorable.