I just re-entered Thailand last week after almost 2 months in the USA. I had a tourist evisa from the embassy in dc this time and had no problems entering Thailand.
My passport is full of Covid-time extension stamps and various visa on entry/extension stamps.
I had proof of onward travel within 60 days but wasn’t asked to show it.
This was my personal experience re-entering Thailand via BKK in July 2024 🙂