This actually seems to be a feature. Along with the Bimbo/Bro check, alternatively having at or over 50 exhibitionism points allows the exhibitionism loss to pause if any of the following are true (basically any underwear that can be considered kinky, regardless if your character is fully clothed):
- Ass is exposed by lower undergarment
- Crotch is exposed my lower undergarment
- Chest is exposed by upper undergarment
- Lower undergarment is transparent
- Upper undergarment is transparent
So the wiki may need updating for accuracy, but this is how the exhibitionism system currently works. I'll try to add some clarity in the codex listing for the stat for the next release.