You have to get past the wheels before you get caught on a chainring. Discs are out front and sharper than a chainring and they get hot too...
All that being said disc brake injuries aren't terribly common in mountain biking...
Have you ever touched a chainring or disc rotor? But there is always the cassette which has 11 really sharp "discs" with anywhere from 11 to 32 blades on them.
11 speed cassettes are dead
@Jaap started
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You have to get past the wheels before you get caught on a chainring. Discs are out front and sharper than a chainring and they get hot too...
All that being said disc brake injuries aren't terribly common in mountain biking...