Shops that also run small time (usually BHPH) dealerships or get a lot of income from tire sales are the worst about it due to the obvious conflict of interests.
In my state the emissions and safety inspections are combined under the same license. As recently as the 2010s the 3rd party that the training was contracted out to would straight up tell you in the PowerPoint slides that the state's #1 priority is emissions and that the point of the safety inspection was to make holding the license lucrative to remove incentive to circumvent emissions inspection process. At least they're honest...<sigh>
In my state the emissions and safety inspections are combined under the same license. As recently as the 2010s the 3rd party that the training was contracted out to would straight up tell you in the PowerPoint slides that the state's #1 priority is emissions and that the point of the safety inspection was to make holding the license lucrative to remove incentive to circumvent emissions inspection process. At least they're honest...<sigh>