Ok, bit a rant here.
I get really bothered when people refer to certain types of music as 'technical'. What do you mean by technical? Finger speed/accuracy? Theory knowledge and its application in the music? Possibly even both?
Literally, the word 'technical' is an adjective that describes an artist's way of using technique. So, I would certainly argue that all music is technical. Even if someone has bad technique, it is still their technique, and therefore still 'technical'.
The most I ever see this term used is when talking about genres of metal. "I like his style because it's very technical." Of course it is. It's his technique. But what, to you, does 'technical' mean? I never hear the word used to describe blues or jazz. Do you relate it only to accuracy when playing fast notes? Certainly jazz musicians have a degree of technicality in their playing, as well? Specificity is the key here.
Please, stop being vague so I can rest easily. Or, better yet, stop using the word all together.
"He's a good guitarist because his speed and precision is impressive." "She's a good guitarist because her implication of different techniques shows her musicianship."
^^^Those are acceptable. ^^
"He's a good guitarist because his music is technical."
^^That is not acceptable. It is vague, at best. ^^^
I'm done now. I've seen that word too many times today and it got on my nerves. If anyone cares to contest what I've said, feel free--I'd love to see other's opinions.