devtrackers.gg
Sorry, but this sounds like nonsense. How can he be sure that those things are correlated? Baby Dragon is a Golem staple and due to the Pekka buff both Golem and Baby Dragon winrates are affected.
Golem has only a 7% usage rate, so even if every single Golem deck ran Baby Dragon, it's still used in a variety of decks. At least some of those players have opted to switch from Baby Dragon in their decks (or changed decks entirely). Either way, a well-rounded support card at 21% usage isn't too crazy, that's about the same as Electro Wizard, Bandit, Mega Minion, etc.
With only a 49% win rate, you can assume a nerf would plummet both use and win rates - given that there aren't great alternatives for splash attackers yet that would leave decks with extremely few options for that role. We stated last month that we want to buff up all the underperforming splash attackers before making a call on Baby Dragon. We could nerf it this month - but if it just dropped so much without touching it, why should we nerf it?