Quoted By:
The person who preaches about how [insert fossil Pokemon] went extinct for a reason every time someone suggests a buff for said fossil Pokemon that wouldn't even make an impact on competitive with said buff.
Rampardos having Rock Head isn't going to be the second coming of Zacian. It would still be slow & frail and Head Smash would still have the tendency to miss (not to mention you can just send out a Pokemon that will more than likely outspeed Rampardos while resisting Rock and use Earthquake or Close Combat)