that being said stopping is by no means a rejection, if you have hotel flights and money. I have also heard they like to give a warning not to try and enter with visa exempt again for a while.
I have had covid extensions in the past but I never stayed in the country longer than 6months. I arrived visa exempt at bangkok last month and was waved straight through. Guess it depends on the IO.
Do you know if there are any restrictions on entering from a different country? For example I’m getting my visa in KL but I won’t use it for almost a month and will likely arrive in Thailand from Hong Kong.