Do I get an automatic 45-day Visa on entry to Thailand in February 2023?

There is no automatic visa on entry 😕

If you're showing up here without having bought a visa from a thai consulate before you come here and you're from one of the 52 countries who get in free on what's called a "visa exempt entry" (which is NOT a visa, but just a free entry stamp) you will get in for 45 days.

You get to stay 45 days and if you need more time you can extend that by 30 more days at the immigration office for 1900baht giving you almost 75 days