Not too sure whether I'm missing the point, but I'm writing this while locked in a chastity cage lmao. YMMV, but in my case, it does change the appearance (duh). You might not even see it at all with certain designs. Again, no idea whether this may help, but the functionality is there. Just mind the chafing, and a waistband strap is incredibly helpful.
(Please, do not consider it imposing my kinks on random strangers, but I feel uniquely "qualified" to make penises disappear without the "cutting off healthy organs" part.)
As regards pornography - maybe I've always had an adblock installed in my brain, but I've always naturally filtered out stuff that I dislike, so much so that what normies consider arousing doesn't seem to me as such. And the sub-genres are so ridiculously varied, it's a disservice to bunch it all together. JAV eye-contact PoV kissing is my favourite go-to example. Or maybe some high-IQ camgirls - I'd definitely follow some if I were social enough to watch livestreams live. (Unless you're actually asexual, or are disgusted with beauty, then apologies.)