I'd say its one of those openings where there aren't enough games stored to get a valid conclusion. Also, these odd moves were probably only played by weaker players. (The chess.com team have made an odd selection for their 'master' games...)
Rat Defense: Balogh-Staunton Gambit
Strongest rated player to have been in a game with it was around 2100 or 2300, which is still considerably high (anything in the 2000's is noteworthy for me).

Look this up as A82, Dutch Defense-Staunton Gambit, for better play by black. Playing this as a Pirc is weak because of the f5 novelty. Black remains down a 1/2 pawn after 3. exf5 Bxf5 4. Bd3... , since only e6 or g6 covers the exposed bishop. At the expense of the king side, g6 could be followed by fianchettoed Bg7, but I'd like to see how better players handle it...

Hello, is there anyone interested in this line? I played it around 100 times in the Internet. This defense is fully playable. There is a noteworthy game Perelshteyn - Nakamura. For me I like to
surprise my chesspartners and another point is the fact, that after a few difficulties the game gets very good to play. Often times black wins fast! Greetings from Düsseldorf!

The weakness of white squares on the king side seems like a pretty large issue here for me. This line looks perfectly playable, but it does seem quite a bit more risky than the "conventional" moves such as 2...Nf6 or 2...g6. I suppose this is the reason it isn't played more often?
I looked up this defense on game explorer and the results for black were pitiful. My question is why?