What are the pros and cons of the DTV visa versus the Non-Immigrant O visa in Thailand for expats?

The post discusses two visa options for Chiang Mai: the DTV (Digital Nomad Visa) which can be for medical reasons (such as treatment for glaucoma) or attending a cooking school, and the Non-Immigrant O visa. The user inquires about the hassle of yearly renewals for the Non-O visa and the approval rates for the DTV visa in both medical and educational scenarios. Comments indicate that the Non-O visa is generally easier to manage, especially for those over 50, who can extend it indefinitely in Thailand, with no significant problems during renewal.