That doesn't make any sense unless you actually think Hybrids will eat away at Tesla's demand, which I kinda think is funny. The amount of batteries going into a hybrid is non-material and Tesla has their battery supply already locked up. There is no cap on # of sales per manufacturer, no overall dollar amount cap for the EV credit/rebate program, and it doesn't phase out until 2030. There's zero way it limits the number of Tesla's on the road.
The bill absolutely subsidizes/rewards mediocrity. That sucks, we all know it sucks. But it doesn't change my opinion that if the EV credit bill fails, in about 6 months, you would see many legacy auto makers announce delays in their EV plans......and they'll keep delaying them. The fact is that for them to be viable with EV's, they HAVE to have this EV credit. They can't even remotely compete with Tesla on pricing, it would bankrupt them much faster than them just taking the approach of "We think EV's are just a fad" and running ICE into the ground.