fear mongering.. 99% who got thai banks are fine just like 99% of DTV holders who enter the country. We just keep hearing stories of the shady/extremely unlucky ones
i went many times already as I hold multiple accounts, if you opened them on non-b and got history with the bank spanning for years they will not close your accounts , I got new card reissued already while being on a stamp and then switching to other types of visas - no problems