However they would not be my first choice for Rock or Metal - there are
better options out there for those genres. I’d start by looking at
something from JBL, then maybe ATC, PMC etc.
In my experience those genres thrive primarily upon attack, dynamics and speed. Not especially subtlety and nuance.
This is nonsense- but is the most common myth about speakers- that a certain speaker is good for a certain genre of music. Its entirely false- speakers (and electronics) don't care what music you play- and what makes them good at classical or jazz makes them good at rock as well.
Imagine if you had to have a different speaker depending on what record you pulled out of the shelf that day! Obviously it just doesn't work that way.