I'm sure all teleprompter speeches look pretty decent.
Don't be naïve, come on. You can tell who can speak off the cuff, like Trump or Nigel Farage, and who has clearly rehearsed their lines and been coached on the direction to take in a speech or interview. This happens all over the place, and why politicians of the modern era do not do public question and answers, but only answer questions within the confines of a controlled corporate environment. They all meltdown in the face of unscripted situations where they have to call on their own personality and beliefs, but because they don't actually have any they can't answer anything.
We had an election debate on the TV the other week in the UK, 7 way with all prospective leaders. Even the young Green party leader couldn't speak from personal conviction, she continually was looking down at her notes! And she was probably only 40ish.
There is no convincing these people, they are lost, caught up in some delusion about Trump being a fascist leader to whom they are the resistance by merely squawking about it. The fact they would instead choose a morally bankrupt career politician who is now completely senile just shows you how removed from reality these people are, it's ridiculous.