Most half tons including most Ecoboost powered F-150s run into receiver limit and payload well under the published tow ratings. For example, the receiver limits are in the 1150 pound range for the most capable F-150s. That's 7600-9000 pound loaded RV range. Lets say you use up all that receiver rating with TW and you have a truck with 1500 pounds of payload. Do you, spouse, kids, and any camping gear weight 350 pounds? These are numbers in the range you are asking about, so the details matter.
7500 pounds dry would be good for the HD payload F-150, maybe okay for max trailer tow package, and probably not for any standard HD towing package F-150 which is 98% of F-150s sold and sitting on dealer lots.
Power wise, the 3.5L Ecoboost is plenty for most people towing RVs under 8k pounds loaded.
A & A parents of DD 2005, DS1 2007, DS2 2009
2011 Suburban 2500 6.0L 3.73 pulling 2011 Heartland North Trail 28BRS
2017 Subaru Outback 3.6R
2x 2023 Chevrolet Bolt EUV (Gray and Black Twins)