Nineteen days ago I linked to a MotorTrend article about RV towing with an electric pickup. It looked at the Ford F-150 Lightning and the news wasn't good.
Now comes a more comprehensive test by Car and Driver magazine which tried RV towing with three vehicles, the same Ford F-150, the Rivian R1T, and the Hummer EV. Bottom line, the news still isn't good. Plenty of power but really lousy range.
For now, at least, RVing and electrics are not compatible, period. At some point a hybrid may exist which makes the combination somewhat feasible. We aren't there yet, breath-holding is not recommended.