It's the indirect effect of no more DR resets and SR yoyo system. Most people are now at high SR, you really need to work at getting out of SR.S with the current system.
Matchmaking goes by SR then DR. Since most people are now at high SR, DR will be closer grouped together. And since no more DR resets, no more random DR, people actually get matched on how competitive they are.
It still has little to do with clean and fair racing, and at higher DR you might actually see more people willing to race with elbows out to increase their DR. That was my observation at Sarthe last week, A+/A DR rooms were pretty nasty at times, while a bit lower on the DR scale people left more room and drove with much less desperation to gain/keep positions.
The poorer (sportmanship) driver gets ahead in this system. But indeed, they'll still crash themselves sooner or later, the better skilled driver still has the overall advantage if they don't mind dealing with continued abuse