I agree with F5 on both counts.
Oil injection is an unecessary complication. What next a battery and starter motor? Pretty soon you'll want valves timed off the crankshaft.
The advantage of the 2T is simplicity, reliability, light weight and low maintenance costs. 4 strokes better serve the other end of the off road market.
I also agree with 2T being an easy target. Allows politicians to claim to be doing something while doing nothing because the main auto, aircraft and oil industry is too powerful. They wont get serious about green house gases until large numbers of americans are dying on account of them, and it'll have to be indisputable that it was greenhouse emissions too. Even then I bet interested parties will be saying it's unproven just like tobacco. So ... I'm enjoying my smoker in the meantime safe in the knowledge it's nothing compared to my next flight.
Cynical but sound reasoning?