The charge is that Trump didn't believe the election was stolen. Any testimony about what Trump actually believed, unless it is from Trump himself, is hearsay. Professing an idea in speech or pursing legal actions from a wrong or deluded understanding isn't fraud. The prosecutors pursuing the classified documents case have a tape where Trump is waving classified documents, saying they were classified, and that when he was President he could have declassified them but now it is too late. That is not hearsay. That is evidence. That is Trump expressing his understanding in his own words. However in the election fraud case, all they have are people saying what Trump believed. That is hearsay and worthless. If the election fraud prosecutors don't have a tape like the classified documents prosecutors have, then the election fraud case is nothing more than a show trial to interfere in the 2024 election.