yes seen when you ask a vague question with little to no information you will get snark remarks as the answer varies depending on age and what passport they hold
just turn up and present your passport, don't say anything unless asked. They may ask about if you have ticket to leave Thailand that's about it. Do not ask if you need a visa as you don't, asking may just only lighten your wallet for no reason.
I helped a friend do his and was done in 4mins the payment processing took longer than applying. But yeah if you not familiar with the layout and what visa you need to apply for I can see it being a pain in the ass to negotiate for some people