Most people who are now on long term visas had at one point spent half a year, or a full year on visa exemptions, or tourist visas before transitioning to a new status.
His case is fairly common because many people hesitate getting a long term visa, due to no actual rules governing how long you can spend in Thailand during one year on visa exemptions, setv, or metv. The fact that he was still allowed in after questioning, and the existence of border run agencies, is proof of the lack of rules.
other than the visa itself, the other stamps are written in Thai, but translating them shows nothing of importance, other than the school name and some stuff related to the officer that approved the visa and on what date, but absolutely nothing related to an “extension of stay”
Under the 3 big stamps related to the visa, there is a final blue rectangular stamp saying “Please contact the immigration office for a re-entry before leaving Thailand”
If you think you can live there permanently being broke you are deluded. You don’t know shit about my finances anyway you racist k*nt. I stopped working at an age when you were still dreaming about your pension.