The assumption is that exposing a criminal and a traitor (Trump) for what he is and what he did, will open people's eyes and enable them to better recognize a shyster and con artist the next time he attempts to gain that level of power and influence.
You and your thick-skulled obstinance and obtuseness OTOH, are a prime example of why it is all wasted time on conservatives.
Proving Trump is a criminal traitor just makes conservatives like and identify with him even more.
Concerning the OP, the hope is that a majority of independent minded voters of the kind who helped elect Trump in '16 but wised up and abandoned him in '20 because they take preserving democracy seriously, will get the message and reject him or one of his hand-picked successors again come 2024.
Simple enough to understand without needing it explained to you.
For most people anyway.
What crime? What treason?
Now if you want to talk about treason, Biden or Hillary have some excellent examples, such as giving weapons to the enemy in time of war.