Frankly to each their own. They are two different styles, and OP isn't a guy who just drives his car slow everywhere like a grandma, he has a track set up as well, so I think he agrees that yes in the most extreme a stretched tire could potentially be less safe than a normal sidewall, but like he said its a risk he's willing to take.
Besides if someone wants to put on large wheels with a lip and stretch and wants to drive slow everywhere let them it's their car! You can just pass them on the twisties
Again OP, I still like your car a LOT! Both in form mode and function mode.