That poll being referenced was only taken of Republicans. So, what is the "
can't beat Trump" line about? That poll had nothing to do with independents, which is the true test of a President's approval. You do not need to remind me that Republicans will stick with Trump, regardless of what happens. The January 6, 2021 riot at the Capitol proved that. That is how a cult operates. The support and defense are unconditional. However, it is mostly Trump's base creating a stir about Trump's broken promise of transparency over the Epstein files; not Democrats.
.... and since you brought up RCP. Here is what the polling averages say, that don't just include Republican voters :
As for your "Reminder: this is a CNN survey!!"
I take that to mean that you consider CNN to be a good pollster then?
That's great! Take a look at the very first poll on Real Clear Polling's list of current polling data. It just happens to be CNN, and it says this, when more than just Republican Party voters are included :
CNN
President Donald Trump - Job Approval Rating
APPROVE ................ 44%
DISAPPROVE .......... 56%