According to the Homeland Security report from March 30, 2020, the average overall Non-immigrant overstay percentage average only 1.03%.
Thailand is not specifically on the list of countries. The Top Five percentage countries with overstays: Portugal, Spain, Chile, Greece, and Lithuania. The top percentage being Portugal with 1.8% or 3,275 overstays.
Thailand is a Non Visa Waiver (NVW) country and the number of overstays for that category are 2.55%, less than the student overstay average of 2.71%.
There are some countries with a smaller number of visitors, but a much higher level of overstays, mostly from African nations.
I'm not sure that there is proof that a lot of Thai people overstay in the USA. The immigration rules seem to reflect the Viet Nam war era and aren't appropriate for the present day.
My Thai girlfriend (now wife) applied for a tourist visa two times already over the past few years. The first time we meticulously prepared everything on our own, and the second time we hired an agency which her friends said was a 'sure thing'. She was summarily denied both times without the agent even appearing to look at the paperwork. Now that we're married we're going to try again, but I've heard some stories about wives being denied even when they have property, children, etc. It's really a messed-up system.
Same situation for my girlfriend (who is now my wife). She applied for a tourist visa twice and was rejected twice. Seemed like they didn't even look at the documents we spent weeks (or months) preparing.
We applied for a U.S. visitor visa two times and they never looked at any paperwork, let alone a letter, either time. Both times she was declined without any explanation.
It's a proposal only at the moment: "For those interested in gaining a digital nomad visa, proof of earning $40,000 USD per year is required, along with having health insurance coverage of at least $100,000 USD." I think there were other requirements mentioned as well, (something about a master's degree and proof of two years employment) but we'll have to wait and see what their final version says.