you can't read! It's visa exempt. Look up what exempt means, it's an English word. You can n argue all you want but it doesn't alter the fact it means NO visa. . none, zilch, zero!
it's exempt of visa. OR you bought a visa from embassy, on line, before you arrived. Surely you know if you applied for a visa and paid for it? It's not something you'd forget. If you didn't apply, they give you an entry FREE of any visa. It's called "visa exempt". The word exempt equates to not needing a visa. So you do not have a visa but can stay "exempt" for 60 days.
It's for arriving. Nothing to do with visa, or no visa or duration. It's a free landing card. It says on the form. "Thailand Digital Arrival Card". For arriving in Thailand, any arrival, every time anyone arrives.