A driver’s inherent traits are only one aspect of it’s end performance. As mentioned by at least of couple of folks, how something is implemented is critically important. So everything "depends".
There are pros and cons with every single choice. Speaker designers are inevitably faced with "pick your poison" options (sometimes multiple times), then have to figure out the best methods of dealing with that choice.
IMHO, sibilance and over brightness are far too common, and it’s one of the most annoying aspects of many systems. Many things can cause sibilance. From the range that a given tweeter is used, how it’s crossed over, where it’s crossed over, the parts it’s crossover with, it’s output level, frequency response, wires, connectors, baffle reflections, etc. Many times tweeters are simply too bright because of too much output...sometimes by choice so a speaker stands out in the show room, and sometimes because the designer perceives it as more detail. Other times, it’s those subtle nuances that are so difficult to measure or prove in an A/B test, or a more complex combination of things. True vividly clear treble requires a lot things going right upstream from the tweeter...many simply settle for treble emphasis and mistake it for clarity.