Not sure about the 2021 but last summer saw one pulling a modest 24ft trailer up a steep grade...except to park road was dead level.
Check the payload limits. A 6200lb trailer is going to have a hitch weight of around 800-900lb. Add in people and gear in the jeep and it may struggle to stay within payload limits.
I'd be looking at single axle trailers under 20ft and make sure to get a good weight distributing hitch.