Why did ichigo use final getsuga tenshou

It would be interesting to know how much of the faults of Bleach are Kubo vs the editors.

Yeah the Fullbring arc could've been a good reset point, and the whole atmosphere at the beginning with this random dude who had inserted himself in their entire history but only Ichigo was aware of what was off was good. (Since the Fake Karakura Town arc even had those brief asides to the Ichigo's schoolfriends that indicated Kubo hadn't exactly forgetten about them even if they weren't really doing much.) I thought it was gonna be Kubo doing a Town-based Arc with a depowered Ichigo and friends doing stuff together in a way that'd write the rest of the Town cast back into the story. They built her up as this kick boxer lady who was slowly being able to interact with hollows (Didn't she like bite one when it attacked Orihime at some point?) and she just gets forgotten.

Kubo had a real sense of flairand modern style that shows up in those early OP and writing doofuses so I think the manga would have been infinitely better if the Souls Society never happened and it was just Strawberry and his weird townie friends getting ghost fighting powers and maybe they help that weird drug store owner when the ghost cops show up lookin for him.

Why did ichigo use final getsuga tenshou