What are the limitations for extending a 60-day visa in Thailand during the COVID pandemic?

The conversation discusses the possibility of entering Thailand on a 60-day visa, extending it for an additional 30 days, and then applying for a 60-day COVID extension, potentially allowing a stay of up to five months. Key limitations include the requirement to show proof of onward travel, which could be a return ticket or a cheap flight. There is uncertainty about the continuation of the COVID extension program past its expiration date of September 27th, with various opinions on whether it will be extended or not. Some participants suggest considering the non-immigrant O visa as a viable alternative.