I am guessing some of the reviews here may be posted by competitors. For example, once you're a member there is no way they would cancel your membership. Just throw that review out the window.
I just rented a tesla model 3 for a week. I really got the car, and it really was a tesla, and it was not really expensive. But there are things you do need to be aware of.
First, check the host ratings. Those are critical with any service like this. My host was OK but made a couple of gaffs. In the end I really enjoyed using the service. My host did not charge the car fully and he had recently changed his location and I got a little bit stuck. In the end he accommodated me on the return.
Here's where to beware: Watch the mileage limits. Mine was a "total mileage" limit of 600 miles. I had the car for many days so this did not make sense, but yet I got burned for $450 extra fees. That being said, If I had rented the Tesla from another person, my car would have cost me more (well over $100 a day; mine was less than $80 a day).
Some people are renting dream cars on this site- this is one way to drive a dream car! But in those cases the mileage limit may be really low. Remember to carefully review this and other things and you should do well if not better than using a rental service. For whatever reason, you can't rent a tesla on hertz, avis, or any other car rental company that I can find. You can do it on Turo and you can do it for a reasonable price.