Look, most (if not ALL) of the Book 2 rules concern small operators, merchants usually, with weaponry a secondary (or less) consideration. Turrets in this case are add-ons, drop in modules. There is no wasted space or expense "put aside" for remote operation of turrets or battery fire, just in case one wants to add (usually another expensive waste) weapons later for "adventures" instead of making money the sane, logical, way. They have to be simple, easy, all-in-one packages. That is what they are. So, no, in this case remote control turrets do not make sense, are not logical, and CT did not miss the boat (etc.) in not adopting them.
Further, as I understand it, the reason for the adoption of remote operation in the B-29 (and such) was a good one, a logical one, for one big reason. Gunners were freezing in the turrets, exposed to -50 during high altitude operations and not having the luxury of being able to move to keep warm. They did have heated suits to compensate, but the bulk made getting into, and more importantly out of, the turret difficult. As well as cramping actions needed to fire. Moving the gunners to remote stations inside a pressurized and heated cabin was the way to go.
Traveller doesn't face that issue. The manned turrets themselves are sealed, pressurized, heated (or cooled to be honest, staying warm is not an issue for Traveller ships

). Moving operations to a remote station gains nothing. It is not logical. It is not needed. It is if anything illogical for most Traveller ships as it would add expense and reduce available space. Unless you want to propose that turrets be shrunk and cheaper in the unmanned version. The remote version will still be a little more expensive and need a little more space if you want to be realistic.
EDIT: To part of Enoki's original question, CT (Book 2) even had entirely automated (NO gunner needed, entirely UN-mannend) turret operations, limited to Anti-Missile (the program) fire that allowed shooting down inbound missiles. THIS shows something of the underlying concepts. That OFFENSIVE fire requires a person in the loop, for whatever legal or moral reasons. While purely DEFENSIVE fire can be fully automated.