I'll let you guess!
I use my real name on the one other forum to which I contribute but that one is used by people who seem to take themselves pretty seriously so is exceedingly PC and boring. But I'm not sure that it is so easy to identify that many TAS participants, bangbang?
In the world of jobs and networking employers routinely search the web to dig for dirt on people. Incautious and outrageous remarks stay on the web for ever apparently so there's every reason not to make busybodies lives any easier.
Entertaining chat about ones neighbours wouldn't happen if there was the remotest chance that they'd find out. Maybe that's a south of England thing but we try to be on good terms with the tight-fisted pig-ignorant environmentally unaware flash gits next door.