All-around weapon coverage helps a spacecraft meet close fighter attacks

Would rear-facing turrets or all-around weapon coverage make sense on a spacecraft?

Yes. Three-dimensional manoeuvre can change a ship's firing orientation, but weapons covering several directions remain useful when fighters can approach closely.

The exchange treats a spacecraft as a three-dimensional weapons platform rather than a surface ship translated directly into space. Turrets able to fire aft or across several arcs would improve all-around coverage, although freedom to manoeuvre can also bring weapons to bear. Close fighter attacks are the main reason broad defensive coverage still matters. The passage concerns science-fiction design and does not describe an operational naval system.