No doubt all the members and board owners are law abiding citizens here and wouldn't dream of ever breaking Thai laws, for instance by hiring a prostitute ? Or riding a motorcycle taxi without a helmet etc.
My hypothesis is that in general, Thai police try to maximize tea money by setting the price at the highest level which does not stop re-offending. Which is what Northern Irish is perhaps alluding to.
However, according to a newspaper report you posted, the farang recently caught in Pattaya were detained overnight and the fines were quite steep. Like over 15,000 baht if I remember correctly.
This doesn't seem to be following the normal principles, unless of course it's setting a suitable deterrent to ease future collection of tea money ? Or have Pattaya Police hired a different economist ?
Either way, the board is (mostly) populated by adults who can make their own decisions, preferably after understanding the potential consequences. The fine might be more than expected.