there is no law on banking and immigration status. It doesn’t make sense for a bank to go through all the administrative work to open an account for a transient.
criminal punishment is incarceration up to 5 years and/or fine up to 100k thb. Illegal workers are usually just deported from what I have seen. I've seen a small fine as well. Never seen incarceration, but I also don't know every single case that ever takes place. I only see some of what is reported in the news. Also, the news media doesn't report every single incident involving foreigners in the country, although it does tend to seem like it sometimes.
incorrect interpretations, because they are adding in the phrase "in Thailand" with the thought that it is implied. The law does not imply anything. It is as written. I don't know if you are new here, but for many years people have been playing mental gymnastics to try and justify remote work as legal. When LTR was released, BOI and MFA finally told us, at that time, only LTR holders could work remotely. They didn't wrongfully interpret that.
read what I wrote. Work under the Decree doesn't state "in Thailand". It's all work. And, if you don't believe me, you can check the briefs written by the biggest law firms. I have also written one.
DTV was specifically created to allow people to work in Thailand with foreign based work. MFA said they do not need a work permit to do that on DTV. I don't like the whole DTV thing, but it is what it is.