if you think thailand will continue the covid extensions therefor allow people to live in thailand for 40 years just on these visas then you are dead wrong and should stop sleeping so much so you wont have those dreams anymore
i had a kasikorn bank account and in july 2020 i left thailand because of covid. coming back sept 22. account was closed due to no money being deposited in the account and it didn't have any money in it. based on that, if your account was on 0 or very very low and you didnt deposit there some money from time to time then it is closed. if it had like for example 500-1000+ baht in it, then it shouldn't be closed.