@Eduardo ********
The ENTRY requirements are for anyone coming to thailand, period end of story. Right now, you meet them or you don't get in.
They have nothing at all to do with a visa or lack of one that you are entering on.
All I said is that yes it's totally possible to enter the country on a 30 day visa exempt entry and then apply for an in country 90 day Non-O.
That you meet the entry requirements goes without saying and as it's not anything to do with thai VISA advice (I didn't mention it). π