Hopefully they will do something like Paizo did - both a community use policy (for fans not selling anything) and a separate license for those that do sell stuff.
Why isn't it? It's their playground that they're letting everyone else play in. It's not like they can't set the bar wherever they want as far as quality goes.
Which, again, is why I'm thinking that the "for pay" stuff is going to be directly licensed rather than an open OGL license. This lets them have oversight on projects and probably sets a fairly high bar for entry. Some guy banging away on a Word doc in his home likely won't be able to get his stuff in print for pay. Release it as a Netbook Of ... sure, no problem. But, if you want to get a book on the bookshelves sitting on the same shelf as the WOTC D&D books, I'm not really seeing a problem with letting WOTC be the gatekeepers here.
The biggest one is probably that "quality" is immensely subjective. There is no one authority on what is "quality" and what isn't. If the Edition Wars have taught us anything, it should be that.If WotC tries to appoint some Quality Czar to police all the D&D-compatible things produced in 5e, they are introducing artificial controls on what is "quality" that people are going to disagree with. This rules out potentially amazing products, and enforces a particular kind of very limited scope of what "quality" is.
Quality is in part subjective, and in part objective: If you had me build you a wooden deck, in any normal amount of time, it would end up with poor quality. I just don't have skill with wood working. A decent carpenter / builder would do a much better job. The difference in quality would be quite objective and obvious.
Perhaps a better phrasing (although it seems clumsy) would be to remove shoddy work.
If an App Store model is used, I do think there are additional objectives besides quality: Content control; content gating; having a veto on product spaces of interest; having a preview of what the market will produce months ahead of time; having a pipeline of ideas to mine; having leverage over larger players in the market. Which kindof sucks if you are not running the App Store, and, I think, not something the market would like.
The OGL-curious will have something to OGLe a few months from now.
Anyone who wants to create 5E-compatible content under the existing OGL can certainly do so. If WotC decides to be dumb about it, and there's genuine demand, expect an OSRIC-style 5E-compatible product within a matter of months of a GSL-style turd being floated.
With OSRIC, folks were cloning a product that was out of print, that WotC had no solid plan or intent to make significant money from in the near future. It was not worth WotC's time or money to pursue it, so it was never challenged in court.
Cloning their currently active product line, however, is a different kettle of fish. Technically speaking, it can be done. Practically speaking, it is asking for a lengthy and expensive legal challenge from WotC. I don't know of any major company for whom it would be worth the risk to clone 5e. And minor companies probably don't have the resources to go through the legal challenge intact.
So, I disagree. Don't look for a 5e clone within months.
He's talking about fan-created content here. Third party commercial publishers are not so much as mentioned in the article. While it is possible that they intend a broad OGL that covers both the commercial and fan publisher, that they only deal with one case here suggests that they'll be handling them separately.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.