STEAM IS NOT REGIONALLY RESTRICTED, YOUR THREAD TITLE IS INCORRECT.
The article you linked clearly says this applies to gifts, if it applied to games purchased through steam (NOT GIFTED THROUGH STEAM), it would mean that steam is region locked.
There is a major issue with steam's trading system and according to that PC gamer thing, that is what this applies to. Games cost different dollar values depending on where you are located in the world and some people abuse that fact by paying people in areas with lower prices to buy and gift games to people in areas with higher prices. Russia has lower game prices (or it did at one point) and I had a friend on Steam offer me a bunch of games at discount prices because he was in Russia and he wanted to make money, like if a game was the equivalent of 40 US dollars in Russia, but 60 US dollars in the US, he would sell games gift a game to someone for 50 US Dollars, that way both ends benefit.
I understand the automatic anger over any region locking but the alternative would be to charge uniform prices for all games across the globe, or jack up the prices so that games were scaled to make a 60 dollar game in the US equal 60 dollars in a place where games are usually cheaper.
Thats why I just don't do the whole gifting/trading thing, I occasionally buy a friend a game on their wishlist but if worst case scenario happens and they move and lose access to it, they aren't technically out any money. Now if Steam region locks games that are bought directly off the store and for the purchasers Steam account, then I would be mad.
I get that its a bummer but thats no reason to mislead people over the truth, especially when your own post shows that you are wrong.