I guess I should chime in on this topic since I have first hand knowledge, having rented one for a month after my 2018 got totaled in June.
The $334 does include insurance and maintenance, but it's about $30/week extra to cover the windshield and tires and another $60 for a LR if I remember correctly. It adds up (doesn't it always!)
Overall, no, unless you got an absolute lemon new it makes far more sense to buy one yourself. I thought about renting one until my '22 M3P came but when the delivery got pushed back into September I gave up my $250 deposit (you're all welcome!
) and went with a '19 M3P from Tesla with FSD already installed.
One thing I took away from the experience was I was pretty impressed with the SR Model 3. I could make it work with supercharging even though driving 1000 miles a week. The different battery chemistry and being able to be more casual about your charging regimen I think is a big plus for the average EV owner. Feels like any other Tesla unless you floor it- it's not slow I'm just spoiled! It's definitely the best value in Tesla's fleet, and anybody who can do math will quickly realize the benefit over all but the least expensive ICE cars if you drive a lot.