Universities? Can you point to a university whose explicit policy is restorative justice? That’s not how universities generally work. You’re probably taking issue with an individual department which naturally has a certain research and academic history.
Are you prepared to cite the works prepared and researched by individuals at a university or lab which counter the research on restorative justice?
If not then either it doesn’t exist and we’re operating on anecdata or it does exist and the research system is proceeding exactly as intended. You are also comparing the outcomes of policy to the work of scientists and philosophers without analyzing the specifics of imperfect policy meeting an imperfect world.
Research and knowledge work in general is often wrong. That’s not the point. For decades large parts of the genome were believed to be garbage. That wasn’t amended by the government it was amended by researchers following the scientific process. The politicization of the process doesn’t speed it up, it simply introduces an outside malignant influence to an otherwise slow but steady process of inquiry.
> So it is for many university programs
There should be a 'marketplace of ideas' which absolutely does not mean that your ideas should be the only ones you identify in universities. It doesn't even mean that you should see your ideas in any university. Just that, if you make suasive statements, you will attract followers—and maybe you can go ahead and make your own university.
The real problem that this sort of 'DEI-killed-all-intellectual-sophistication' arguments elide is that we're not educating our children (any of them, purple, green, or whatever race you wish), and instead are feeding them social media and other attention-grabbing things.
On top of that, those of us who follow right-of-center media now have this continual push to believe even more far-fetched things daily. So how can you possibly imagine that right-of-center thinking will have a place in the marketplace if one element of being right-of-center is rejecting truth?