Some of the reactions to this remind me of the comedian Stewart Lee's bit "...there's an entire generation who seems to have confused political correctness with health and safety legislation."
It's no different than someone owning a building not up to code, the owner knows it but keeps putting it off, he doesn't want to risk losing tenants or income, but eventually someone is injured and the courts get involved.
The thing that made concussions a bigger deal were the cover ups by various sports leagues. Doctors who should have known better who sent them out there again, league-commisioned studies which were later suppressed, or others which were released without sound methodology. The players also had some blame too, but the very qualities that made them pros like toughness, drive and being team players also made them more likely to ignore signs from their own body that something was wrong. Had there been more up-front cooperation and education about this everyone would have moved on from it already.
It's time for all parties involved to just be truthful about the risks. It's not enough to back it up with common sense but hard scientific data. The existence of improved conditions for say, loggers or fishermen or miners hasn't eliminated those jobs, or their dangers altogether. It'll be the same for sports. People who cry about the death of contact sports are being overly dramatic.