Well yes, but the reason having the girls be naked throughout the game especially in adult games is much sexier, because it will make men who feel curious see the girls naked in all their glory and wish to have sex with them, especially when it’s a strip girl where the girls keep undressing until they reveal their nude body to the players as a reward including sex
As for the boobs hidden in los angeles game, I saw it but its mostly topless women but for the other entries like the sexy time version, Boobs Hidden Ibiza, and Boobs Hidden Rio de Janeiro they do show full frontal nudity hidden