Oh for god's sake ...
How many 'trackdaypunters' do you see running laptimers? Heaps! I've walked around the pits on quite a few track days last year and seen loads of people with them, trying to hide them away.
Yes it's difficult to set a hot lap without disturbing other riders on track but you do get clean laps in the fast group so you do get the opportunity to have a go without impacting others.
I've ridden with Dom on a track day and I can vouch for him being a courteous rider who doesn't go stuffing the bike under people mid-corner etc. Track days help racers learn/refresh the circuit, it doesn't necessarily mean that you push every friggen lap and carve people up. In general it's the bloody hero's who think they are superfast that carve people up, not racers. There's exceptions to every rule ... JUST MY EXPERIENCE!
Just like legends who want 46psi in the rear so they can 'rear-wheel' steer the bike around in the novice group ...