You don't have a visa, you have an extension of stay protected by the reentry permit. TDAC is nothing to do with visas, or extensions, it is an entry record - just like the old TM6. Everyone entering Thailand has to complete a TDAC.
Of course they use their discretion.
That is why agents can only do retirement extensions - and not marriage based extensions which have to be sent up the line.
(NB: Not disputing the orders that you posted but that discretion is very wide ranging when words like 'competent official' are used.