You are pretty naive if you don't think people are driving high around you all the time. And I could easily find examples of people with identical behaviors to the rest of your post who weren't on any drugs at all, so the anecdotal evidence isn't going to earn you any points either.
Not yearning to gather points. Just giving facts.
As an example, cell phones cause distracted driving too. Pretty sure it happens every where.
Someone being tired daydreaming, in an argument, etc. Can all act as I described earlier.
Not sure what your real point is supposed to be.
I have no doubt at this moment there are people all over the world under the influence of drugs, alcohol, stress, sleep deprivation, etc. doing things that cause problems.
Naivete is thinking that marijuana is "safe".
JMO
Back to the OP... Mills doesn't have to play any more college football to make it to the NFL, CFL, XFL etc. If he's good enough and can follow rules.