What are the requirements for obtaining the DTV visa in Thailand and can I qualify by taking cookery classes?

Hi. I have been a member of the group for a while and have benefited from the advice of Brandon Et al. I’m from the uk and have been travelling to Thailand for many years, spending up to 6 months per year there. I have used visa-free and tourist visas for this but this time have a non-o 90 day visa based on retirement to arrive in December. My plan was possibly to extend this for one year based on 800k in the bank. But the exchange rate is not great at the moment and I am reluctant to place money in a “ dead” account permanently. So now for the question. I read about the DTV visa (5 years multi-entry). I am retired (62) but didn’t think I would qualify as no desire to work. What I read is that you can get this based on cookery classes (even just a couple of weeks from a registered school?). I enjoy Thai cooking and would like to learn more so would not be an issue. This sounds too good to be true (10k baht for the visa plus the cost of the class). Am I missing something here or is this a viable option? TIA for constructive replies.