Because you knew that. I didn't, but I do now. Makes sense, through. Private businesses provide all kinds of services. Then again, it's an extra expense, and even that alone is not going to go over well.
Also, off on a related tangent, while #gamergate attracted its share of nuts and trolls (what heated subject doesn't?) it's a very real thing. The collusion is real. The corruption is real. And it's ongoing as I type this.
I'm not saying that anyone reading the article shouldn't make a big deal out of it, I'm just saying that this guy probably shouldn't have written the article in the first place without looking. Unless it's changed since I checked last night (and this is possible), it was pretty much a mirror of the old Places set up I had dealt with - Enter your business address here (no PO Boxes allowed), enter your public contact address here (this is the one that shows up on the Play store - PO boxes allowed).
The guy actually took an issue that he thinks affects him enough to write a blog about it, but didn't look into it at all. Like, AT ALL.
As for the actual policy - not to sound like a Google apologist here, but it's not like they're doing it for the hell of it. They're doing it to comply with a EU Consumer Protection directive. Apple and Microsoft aren't complying because their business model is different and their store is managed differently. In the Play store, the developer is the seller, Google just facilitates the transaction. Lower fees, they don't curate the store, and developers get paid quicker. It's pretty much the main strength of the Play store. Apple and Microsoft treat it differently and they act as a reseller. They approve your app prior to sale, curate the store, get paid, and then pay you a "royalty" of 70%. So, as far as the EU is concerned, having their address on file is the important part. No one knows what Ebay will do, Etsy and some others are allowing sellers to either list address or block their sales from EU markets.
The real question is whether or not the EU member states will allow PO boxes as public contact addresses.