Also if you are hurt and do NOT report it, your CoC will not be able to read your mind and fill out that EXTREMELY important CF98.
My back injury from a jump in 1992 was documented well (including a CF98). When I filed with VAC in 2005, that CF98 was EXTREMELY important. I can't stress that enough how important that may be in later life. I now have a documented case with VAC, a recognized injury from a military related duty. If some day, I can't walk or work in the CF anymore, you can't imagine how important that is, and the key document in the whole thing is the CF98 that my Coy Commander filled out properly.
CF98s are very important documents. You can't have a CF98 for an injury that you never reported. You can't reasonably get one 10, 20, 30 years later, when you need it. Now I am not saying that you need or will get a CF98 for every little scratch and cut, but you WILL get one for an injury that warrants it, IF and only IF you report to the MIR for assessment/treatment and IF you engage your CoC in that process.
Lastly, just because you have a documented injury, even one with VAC, it does NOT mean you will be released. IAW my VAC file, I have a 10% disability, lumbar spine. I receive a pension for that monthly. I have never had any MELs (except 2 months immediately following the jump/injury), I have never been on a T-CAT, I hold a Med Cat of 1 1 1 2 2 5 and meet all the Universality of Service requirements. Being injured is NOT a career stopper. My Med File contains all the documentation, including the VAC doctors assessment. I just completed my aircrew medical parts I and II for my (hopefully) next MOC last week, with a clean bill of health.
IMO, the best thing you can do, in the long run, is let the system work for you. It did for me. And I still have my CF career today.