The problem is that this is one mon that, based on stats, doesn't seem at all viable in VGC.
There are a lot of ways to balance the game but randomly removing mons and then putting bandaids on the leftovers by including a mon with an ability that might irritate them for a turn or two isn't how you go about it.
Screencap this and quote me on it: Tyranitar and Excadrill are gonna be on eight of the top eight VGC teams for the first major.
>>39734687>Smogonfag dex trannies btfoHilariously, Smogonfags actually get to play with the full national dex because Showdown will have both regional dex and national dex variants of both singles and doubles.