I guess you mean the one year extension of stay. Anyway this is correct, no rule has changed and I’ve never heard of any immigrations with deviant practice either.
It did exist, you got 90 days within a year each time you entered Thailand, -now you only get 90 days one time.
Non O-A is basically the same as the previous Non O. You get one year upon each entry within one year, -two years in total.
The main requirements are the same, -minimum 50 years of age and income/funds 65K/800K baht, but the Non O-A requires a mandatory health insurance/certificate and a police check up as well.
Both visas are based on retirement/50 years of age and passive income/funds and you’re not allowed to work or do any business on this basis for your stay.