The counter argument is: if you enforce the law and start clamping or towing away vehicles and fining their drivers, then they will not return to Pattaya and they will post on social media and deter others from coming too.
About 2 years ago cars parked on Pattaya Beach Rd were being penalised and this position was quickly reversed after much criticism online. Businesses on or near the beaches need customers at weekends and don't want them being scared off by the police.
A couple of park and ride schemes would make a positive difference to improve things for everybody, but I won't hold my breath waiting.
Not enough car parks either, or they are in the wrong places.