I agree with the comments about people playing too fast and loud but what's wrong with using the guitar as a percussive instrument, after all its origins lie in Flamenco music where its role is predominantly percussive. In both music forms the music is mainly for dancing to and rhythmic drive is not at odds with the tradition of the music.

Further I would argue with the 99% figure quoted for tunes in G or D, my guess would be that 60% would be nearer the mark, the remainder being made up of A, Em, Am, and Bm (there are a small minority of F, Gm, Dm and Bflat tunes around).