Strahany
Premiership Player
Absolutely correct but there was an RCT by de Vries et al on this taping which showed good short-term results for reducing pain (although essentially equal to placebo). This tape is widely used and taught for patella tendinopathy at undergrad and on taping courses. I've used it a few times with good results but generally don't for the reasons you stated. It must have some other mechanical effect but as I don't use it I haven't read or thought much about it. Google Jake Carlisle Knee Tendonitis and he mentions carrying it for 4-5 years in quite a few interviews.
(Apologies to everyone else for getting nerdy).
I can only assume that he has some major issues with patella tracking; such that the disrepair, secondary to the compression of the tape, is not as severe as the disrepair caused by mechanical forces, secondary to the tracking concerns.