Here is a very good article that pretty clearly explains in fairly low tech detail how 50 amp service does provide up to 12,000 watts and up to 100 amps @ 120 vac to your RV.
https://www.rvtravel.com/rv-electric...p-shore-power/
And this one.
https://www.myrv.us/electric/
If you can read these and still disagree, then there is no further need to debate the point.
And yes, I am a BSEE and licensed professional engineer-retired. As if that matters.