Simple logic dictates that there exist no speakers better suited to particular genres of music. Bad and good tendencies apply across the spectrum.
yes and no, in my opinion
some speakers do better with some musical genres than others because their strengths and weaknesses are more befitting and tolerated with certain kinds of music
example:
klipsches tektons zus - these are ’lively’ brash sounding speakers, excel with drum snaps, forward presentation, not the most refined, not the best at imaging - so they work well with electronic music, rock, ’party tunes’ - they are good with the beat, impact, energizing, in-your-face sound which is the essence and goodness of that kind of music
conversely, speakers of that ilk can be found to be too unrefined, sloppy, inexact for properly re-creating small ensemble jazz, acoustic music/piano/guitar/woodwinds, sparely accompanied vocals, classical/orchestral music ... they don’t image well enough, everything is up front in an even plane no depth, distortion can be heard around leading edges (a plus in rock music) and thus, listeners like me find them rather intolerable and unable to deliver the purity of sound i seek in serious and long listening sessions