I want to reiterate - this is a war ship. That is its primary purpose, to be good at war. That means we need to spend the resources to make it good at fighting.
It's penny pinching and giving us a massive hit to our capacity to engage 1v1 at sublight speeds, which we have been told is what's going to be happening. Ships for fighting are the costliest thing in the game system, but that's just a reality we'll have to live with.
Maneuver doesn't matter for its specific role in fleet actions. But it does matter the rest of the time. When it happens you REALLY WANT IT, but we've already made most of the decisions to make this a fleet anchor. Basically you're setting us up for more climactic big battles rather than overall strategic strength.
No one would think Aircraft Carriers aren't good at war and we don't make them max speed torp boats, we make Destroyers for that. It doesn't give us a massive hit. It's just saying we're choosing not to specialize in it.