It's for not being noticed when you're trying to sneak around.
Not for not being noticed slamming down brews in the pub.
Your character has taken a nanogenic to massively mutate the largest organ on your body. Just because a lot of people don't tend to play up the effects of their other nanogenics doesn't mean that you should not be doing so, in my mind. If you get muscle grafts, your character should look physically buff even if they might not be the strongest chum on the yard. People with synaptics can role play being extremely dexterous, or with pheromones, alluring.
I don't think we should be taking steps to lessen the potential for RP around people's chrome and cyberware, rather, we should be encouraging people to do more to that end as I mentioned above. Cyberware is flash, cyberware is cool, and I like to ICly take opportunities to talk up people having things that are not aesthetically pleasing, such as dermalweave, because even though you're butt-ugly, armored skin is novahot!