If you entered Thailand either Visa exempt or on a Tourist visa, then your status is a 'Tourist' and you cannot apply for a 1-year extension of stay. You must have 'Non Immigrant' status, to apply for a 1-year extension, as per their written orders.
Therefore, when applying for a 1-year extension, they request a copy of your original Non Immigrant visa as evidence you have Non Immigrant status and are eligible to apply.
In the 'screenshots' you posted, the IO hand wrote O-A on the stamp (O-A is a non Immigrant visa type), whereas they may also hand right 'Non O'. One of the differences between an 'O' and 'O-A' type is that the O-A requires the compulsory Health Insurance (unless the extension is based on Thai spouse), whereas the 'O' does not.
The TM7 form you complete clearly states as the header 'Application for extension of temporary stay in the Kingdom'. As part of the application process, the IO will require you to sign additional forms (in Thai and English), one of these being an 'Acknowledgement of terms and conditions for permit of temporary stay in the Kingdom of Thailand'. Under note 3, it states; 'I do herby acknowledge the terms and conditions applicable to this permit'
You can only extend your temporary permission of stay, not the visa, although its type is relevant.
If you believe that you're extending your Non Imm O-A visa each year, then cross a border and re-enter. After all, the O-A is multiple entry, right, no need for a re-entry permit in that case.
When my stepson got to Thammasat some teachers wouldn't let the kids buy textbooks and then were selling them photocopied pages for 50-100 baht
It was a big earner for them and a big expense for the kids/families
We complained about it and bunc of students and parents kept complaining and they finally stopped that
Absolutely disgusting that a teacher would take advantage of their students like that
To be quite honest
I think my stepson got a good education at Thammasat but beyond that I haven't been that impressed with everything else there
Never knowing when tests are
Never knowing when break is
Now they don't even know when actual Graduation ceremony will be
The class before them is still waiting a year after
It's all been a bit ridiculous
Well, in my opinion these twins are past their point of expiration and a danger to society. Only a lobotomy would turn them around. If they raped one of my daughters then I would be planning for years to come to get the R word. And just have to face it aqs they will be out from behind bars in a few years or more or less.