What are the current rules regarding visa-exemption stamps in Thailand for 2025?

The 2 visa exempt by land entry rule was rescinded on July 15th 2024 when they changed 30 day visa exempt for 55 countries to 60 day visa exempt for 90+ countries.

Now it's totally up to the discretion of the officer at passport control at the border. If they think you're trying to live here milking free stamp 60 day entry stamps, they can tell you that you can get out, but have to stay in the border country xxx days before you can come back OR they can tell you that you can get out, but you have to fly back.

Remember all the land borders with Cambodia are closed and the only Burma border open is the one in the south at the Ranong Pier with Kawthaung burma.

Now as far as proof of funds, proof of onward travel, and proof of lodging (which are all things you can be asked entering by any means visa exempt) that again is up to the guards manning the crossing you're using.