Actually, I'm reasonably familiar with how the system works and have only stated that Thai courts are obligated to follow the law. While your analysis sounds reasonable, particularly the first line, I'd also choose to follow the advice of my esteemed Thai solicitor and suggest others do the same.
True, I have a feeling it will be ok though, I've never overstayed and always have ample funds available to show if necessary. I suppose it's at the immigration officers discretion and if need be I could always book an airline ticket online then and there if they are insistent.