Yeah that's a pretty weak argument when it sold more than any console game too, so by extension that'd make 2017 a fucked year for consoles too, which is retarded.
There were plenty of good games this year, both on consoles and PC. Maybe not that many PC exclusives, but a lot of the best games this year were also released on PC, which is fine unless you're some weird elitist that can only like games that are exclusive to PC. Divinity 2 is I think the big one this year, with a bunch more being good games like Nier, Hollow Knight, Total Warhammer 2, Tales of Berseria, South Park, Trails of Cold Steel, Danganronpa V3, What Remains of Edith Flinch, Prey, Endless Space 2, Pyre, Hellblade, Wolfenstein 2, HOB, Cuphead, AC: Origins, Nioh, Hand of Fate 2 and Battlerite.
And as usual with PC gaming, the year also had a lot of content for existing games that have more people playing than console games do. Shit like LoL/Dota/CS:GO/Overwatch/PoE have constant updates, FFXIV and GW2 got new expansions, WoW still does what WoW does and the new PUBG/Fortnite are new games that are annihilating numbers from previous games of similar genre.