But... Trump did not even have a platform in 2020. Biden did have one. A detailed one. You can still look at it. It's full of stuff he wants to do. All about his plans. Go and read it. Watch his town hall; it's an hour of him talking about his vision. It's his opponent who had none except "Keep America great" and "fake news liberal media".
Again, though, whilst I agree he had to have a manifesto, the talking points were always Trump. The average voter will not read/watch all that. They will watch the big debates etc.
Trump didn't need a platform again because everyone knows what he is. His whole political game is to create a us vs them situation. Biden by, for the most part, focusing on Trump helped that narrative. The last thing Trump wants is a policy based election, he wanted a dog fight.
I feel the Dems let themselves openly get pulled into the wrong type of election. You can't bring in Trump voters/fence sitters if you don't clearly tell them what they would get with you.
They kept saying Trump divided the country which he did. Then their platform should have shown more clearly how they plan to bring it back together
Equally, if they were going to get down and dirty the Trump way then go fecking hard. Throw in all his sexual assult charges, bankruptcy, Epstein etc. Don't half arse it