I don't think there underrated just notorious for being unpleasant tank mates and very aggressive, they will harass the biggest of fish and yet not bother the smallest.
There damsels lol. They do what they do.
My friend has a damsel only tank. Something like 7 in a 55g.
"When creating an aqua scape, strive for the beauty of imperfection, as its art and there is no wrong or right, it's left open for interpretation" James Findley