There're a few studies on chop blocks and there does seem to be good evidence that banning them does lead to reduction of risks for knee injuries, though the reduction is a lot smaller then one might expect. (See
https://journals.sagepub.com/doi/full/10.1177/2325967118768446, for example.) This is probably due to the large number of knee injuries in football that are non-contact; the knee wasn't meant to change directions quickly.
I looked around, but I couldn't find anything much on cut blocks except that some people don't like them and fear they lead to knee injuries. Problem = there doesn't seem to be any systematic evidence one way or the other. The pros don't like them, but they didn't have any actual data when they considered rule changes on this and nobody else seems to either. Soooooo … my guess is that they stay and will be used by every team in college football, like they are today. Until someone proves otherwise, that is.