Do I need to book an exit flight within 30 days if I have a 60-day visa exempt stay in Thailand?

A kiwi living in Australia is seeking clarification on whether an exit flight needs to be booked within 30 days now that Thailand's visa exempt stamp allows for a stay of 60 days. Commenters clarify that the visa exempt stamp allows a 60-day stay without a visa, but airlines might still require a return ticket out of Thailand within that 60-day period. Additionally, some travel insurance policies may necessitate having a return ticket booked to avoid issues with coverage.