There is a serious crackdown at port of entries. The law is in effect especially to those with multiple entries within short period of time. The immigration officers are looking for the slightest offence to deny entry this is not limited to insufficient funds, refusal of entry at another country, previous offences of any sort (rudeness to immigration officer etc). Please check with the immigration laws what is applicable to your visa before travelling out of Thailand.

And the source of this gem is?

This is the first I hear of that. As we don't want to start spreading rumours this topic is now closed, until the OP can give a source for his claims by PM to one of the moderators for this section.