I
did look up the PGA (on Wikipedia) and confirmed what I thought I remembered, namely that there are two separate entities, The
PGA Tour and the
Professional Golfers' Association of America.
As it turns out, the "P" in PGA Tour stands for nothing. It's just the first of three letters. The PGA Tour doesn't organize the U.S. Open, the Masters, the Ryder Cup, or even the PGA Championship!
The United States Golf Association organizes the U.S. Open, which is "open" to both professionals and amateurs.
The Professional Golfers' Association of America
does organize the PGA Championship, but it has about 29,000 members, who are generally professional golf instructors, coaches, administrators, and the like.
This isn't to say that OES are or are not professionals. I asked because I was interested in other people's points of view. (And I'd be interested to know what the Swedish language version of the webpage to which
@allezfred posted says.)
People can disagree with each other, and you haven't proved your point. I do, however, understand your point of view.