They are translucent FFS. All devs have to do is show it before hand and then draw a damn circle around the member - like to suggest it is where the garnish ends up.
Legit scenes in porn have such bad or strange lighting that apart form the garnish, you could never see the actual plastic around the member.
Also, behind the scenes porn clips show the painstaking preparations before, during and after the shoots; the outbursts in the media also reveal that many girls hate guys or girls that apparently do gay or lezbian sex without condoms or pills or STD tests and show up like that for straight scenes. Yes, this is a serious hazard, some take it seriously,
doing their tests and taking their meds, some do not.
This is the whole reason AIDS is a total Global pehnomenon - sex is the universal feel good pill for everything a poor girl and some broke asshole might do to feel good about their lives and the total apparent unsavory lack of higiene in gay relationships - does anyone believe lesbians take their tests while shooting scenes with other lesbians? The lesbians who do are dissing those who do not.
IRL there are actors and producers who lack such standards,
while others are horrified, for good measure, at what STDs that kill can do to a human being.
Condoms are a bloody nightmare to deal with render wise. I have never been able to master them so for most devs its not worth the effort to do so. I can't see that changing any time soon.
I dope hope devs fully appreciate how important they are within a scene.
They could have a small line where they have taken their STD tests and are on the pill,
or have them talk about pooling their money to buy meds for after just like they would discuss beer and chips - who bought the lube, who got the paper towels, who got the toys, they could even do scenes where they wash eachothers toys before the sex - something you can totally see in on a porn set.