I've not towed with my 2" Ecohitch, but I wouldn't try with anything above half of it's stated capacity. That's been my personal spec-to-usage limitation my whole life. (I'm a very cautious EE.) For the Ecohitch, half would be 150 lb tongue weight and 1500 lb towed. I don't exceed the 150# tongue weight for my e-bike and rack, either, but it comes close.
I didn't install a trailer light kit on my '21 Clarity PHEV Touring, but I did on my '21 Bolt Premier. I've looked at tiny travel trailers, but requiring an internal commode is very choice-limiting.