I particularly like the "easy" and "mellow" trail resulted in the rollover.
All the stuff TLF does is Hell's Revenge and Fins 'n' Things, these trails are essentially a city park and right at the edge of town. They are very fun and require some attention, but they are also very drivable by stock vehicles. Here's a photo of my brother's Xterra on Fins 'n' Things. He has a mild 2" lift and my hand-me-down rear bumper, but that's it. He has no skid plates, rock sliders, and the stock front bumper. He drove the trail and never touched a body panel and never scraped his undercarriage. Floating this tire was probably the sketchiest part of the trail for him.
Any reasonably aggressive stock 4x4 should be able to do the trails TFL does without an issue. I would take anything from a Suzuki Jimny to a stock Grand Cherokee on those trails and I bet I could drive them without damaging the vehicle. There are some hard obstacles on Hell's Revenge, but they are optional - and I notice TFL never takes them on and usually picks the easy line. You can absolutely challenge yourself on either trail by taking the harder lines or optional obstacles, and these are where the trails get their reputation; TFL tends to drive around them and play up the difficulty.