@Garry ******
utter nonsense.
I know several people that no longer have long term visas that still have KrungThai bank account that Krungthai happily let them use, they just completely shut off access to the app and it won't be reinstated unless they get a long term visa.
As long as the bank was opened legitimately, for legitimately reasons, with legitimately documents and used legitimately the entire time its a none issue.