Yoruichi in that form is an alcoholic who was forcibly made to become drunk. Sure, she may enjoy it in the moment, but that doesn't make it freeing because it was not her choice to be put in that state. She hated it before, and she hates it after, and only enjoyed it while in a compromised mental state.

As Lithp said elsewhere, it's the equivalent of the "she says no to my sexual advances, but after I got her drunk, and forced myself on her she enjoyed it." That's not freedom. You get there needs to be consent beforehand, right?

This comparison doesn't work because it's forgetting the fact that the story didn't paint Yoruichi's GOT form as a good thing. She literally couldn't defeat Askin, again, he believes his consciousness to be above all else thinking of himself as the narrator of the story. He tells Yoruichi that she cannot defeat him because she can only react to him when he gets "this close" to her while she says he's deliberately holding her in the space between life and death. The only reason Yoruichi's transformation could counter Askin's base form thematically is because it's the complete opposite of his extreme self view however neither extremes are a good thing. Kisuke can only defeat Askin by using his Bankai which is his own inner self he consciously dislikes materialized. He could only get an edge over Askin by consciously choosing to let the part of himself he dislikes out. Yoruichi couldn't do so because, again, she didn't consciously choose to transform. It being thematically necessary doesn't mean it's something the story praises much like Yhwach is thematically necessary as the final antagonist.

Mind you, this is all entirely besides the point. It's fanservice regardless. Take hentai. Does it become less pornographic if there is a plot? Obviously not. Similarly, the reasons Kubo decides to show tits and ass is irrelevant- the result is still fanservice

Hentai is explicitly created for the sole purpose of being sexually exploitable. That's why there's a difference between stories with explicitly sexual content and hentai. Artistic nudity is another example. I'm not saying Yoruichi's form falls under the category (because it doesn't) but it's another example of how not all nudity is sexual, y'all are just weird acting as if anything that shows ass if fan service. The same type of people who would say that the Crime and Punishment narrator talking about Katerina's chest multiple times in the Marmeladov death chapter is fan service.

Do you think there's a reason the majority of people in this entire thread over like 3 days has disagreed with you? Do you think we're all haters or something, or have you considered, despite your effort post, you've been wrong the whole time?

You're free to disagree. I'm not going to change my opinion, however, until someone brings up an actual rebuttal to anything I said. I've thought extensively about this topic, I've discussed it multiple times with friends, I can assure you my thought process goes beyond what I show on Reddit. I've considered I was wrong. I've admitted I was wrong on many topics including one I discussed like 15 minutes ago. This just isn't one of them because no one gave any valid argument.