I have been kind of torn on the whole inspection issue. Back when Oklahoma used to have one at least you knew all the lights on the vehicle worked once a year. However the problem was that it was a major money loser for the shops doing the inspections. No technician that I knew even wanted to deal with it because it was such a loser. At that time a state inspection was nine dollars. As I recall Oklahoma and did state inspections around the turn of the century
Back in the late 1980s early 90s in Mass I was happy to pay the annual inspection fee because of the time it saved me.
Every two years I'd swap either high or low beams out so no headlight was more than 4 years old right before inspection. Why? They made sure the bulbs were properly aimed at the grid in the back of the bay as part of the inspection. I sold off my used bulbs for half of new, and never had to bother aligning them myself, and, never suffered blown bulbs either.
The fact is they'd do a whole bunch of grunt work for free, smaller swap outs of stuff included. I'd even talk them into doing a tire rotation and winter/spring changeover for free when doing the ball joint check - fronts to rear, snows to trunk, and trunk to fronts. I also made it a point to buy gas there twice a month, so, if you were borderline on emissions they'd play with things a bit thinking maybe it was their gas...
YMMV, but, it used to be nice the types of relationships you could build with businesses in small towns.