Yup. I have vintage DonJoy and Orthotec braces for YKW injury. I don't need them anymore. The ortho said both times, I'm fixing your knee so you don't need one, however he suggested I wear one for 6 months (ish) after rehab was done, partly for my confidence to get back on the soccer pitch and to protect me from other players that, um, didn't quite know how to stop. They can be cumbersome and awkward - I've bruised the inside of other knee from banging myself, and although I tried every under sleeve possible - neoprene, stretchy sock, etc, if the brace wasn't positioned exactly right, with exact amount of strap tightening, it never seemed comfortable.
For some college players now, it could be a combination of things. Saw some players from TN and other programs wearing similar braces. Some don't mind it, and wear it long after they might need, however it's definitely personal preference.