"Docked reactor" is a term with a specific meaning. We all know when we see it that it means a long brick that fires a logic power supply beam. We're not talking about those now.
You don't call turrets "docked turrets" just because they're docked.
It's isn't colliding with the turrets, and the turrets don't increase the reactor bounding box, they have their own, so not much difference here.
Self powered turrets are often plugs extending inside the ship.
I didn't say it was a precedent - I said power behaving the way it does between docked entities are unlikely to disappear. (Which means multiple reactors are unlikely to disappear)
The bounding box of the ship is also checked. So you can't make a blanket statement that's accurate for all reactors. The undocked door in your titan may have to do far more checking than the reactor in my frigate.
Don't blame reactors only - all docked entities in ships cause lag when undocked.
I'm not making any excuses, there's no need for one.
Multiple reactors are perfectly valid, using default, intended behaviour.
No truly massive docked fixed turrets that are mostly inside the hull?
A strange thing to say. Are "pros" not "cheating" if they use multiple reactors? Why is anyone else "cheating then? When does someone stop being a cheat and start being a pro?
The effect on a server is the same no matter who the person responsible is, so not sure why you want to apply rules for some people but not others.