Disagree. I've seen three bad injuries with beginners not realizing when to tap or over doing it on a submission (IE, breaking someones arm and shoulder by mistake). About three weeks ago, I destroyed a beginners elbow when he tried to roll out of an arm bar.
I think it takes some time for them to understand the art.
I agree with ur view, my gracie school does the samethign they dont let you roll until u get 32 newbie classes. This cuts out the spazzes and newbs that dont know wtf their doing and dont know how to tap or relax. I don't know about you, i rather not roll with spazzes every time its time to roll.
I am an IT professional, and work for a large corp, where business casual dress code is enforced, so i would imagine walking around with black eyes or whatever wouldnt be good.
What i suggest is, either tell your partner who u spar with to take it easy, or wear head gear that covers most of your face. And you can always go to that BJJ school, 20 classes isnt a big deal, and its only for your own good if you never rolled before.