No, Amigo, it's just the opposite. From my days in the Garage Band, playing drums, I can tell you that I could have up to 3 shots of a nice 100% Agave tequila (like Don Julio or Patron), without losing any coordination on the drum kit. That would be 3 shots spread over a long evening. By contrast, one beer would make me a little sloppy and tired.
You're thinking of Jose Cuervo (NOT 100% Agave or even close) or some other (yuck) Americanized tequila with lots of other crap and fillers added. THOSE tequilas I never touch because they give me awful hangovers. Not so with the Agave. Read your tequila labels.
100% Agave is the only way to go.