Unfortunately
@Ric****
, that you can't understand why they won't do it doesn't even factor in to the equation.
FWIW: none of the immigration offices that issue in country Non-Immigrant type visas that I know of will issue one once you go on to either an "unable to travel due to covid'19" extension OR take the free amnesty.
You need "real" days left on your stamp to do it .
You are correct in your guess, sit tight on the amnesty, and as soon as the borders AND thai consulates in other countries open up, GO and get an ED visa