There are plenty of valid reasons someone might dislike Shimosa and the same applies to pretty much all singularities, really. Even within here there isn't a single consensus on most EoR chapters (CCC being a notable case of divergences), with perhaps the exception of Shinjuku being largely accepted as a "net positive". If one dislikes the setting, characters and/or conventions on which Shimosa's narrative is built upon (or straight up lifts from other sources according to some accounts) then obviously there won't be much there to enjoy.
With that said, I do find the comparisons between Septem Nero and Shimosa Musashi to be disingenuous. There is a difference in tone, purpose and sheer quantity between both. Septem's wank was very one-sided and detrimental to some of its characters (hey Boudica), whereas Shimosa takes the wrestling approach of consecutively hyping everyone up as The Greatest Challenger yet to the underdog
John CenaMusashi. It's less Musashi wank and more like a general JP heroic spirits wank to set up hype for the duels between these larger-than-life figures. Even Kotarou gets plenty of spotlight! Also, historical context and such. Nero was a controversial tyrant, while Musashi is largely known as badass philosopher artist strategist samurai so the praise feels uh, more justified? Even if she's not really
our Musashi, which is the biggest shame here. Granted I've seen some complaints about the Swordmasters' "wanking" too and how Ritsuka shouldn't be paralyzed by a person's gaze since he has experience with Goetia and yada yada, but I'd like to draw another Rurouni Kenshin parallel where
one of its villains uses a technique in which he paralyzes people with a single gaze, so it's likely more of an active technique that
Munenori is directly employing on Ritsuka rather than him being overwhelmed by a passive aura, and he shouldn't be immune to those, specially not without Mash's direct protection. If I'm not mistaken it also has
some basis in real life samurai stuff, though obviously exaggerated for effect.
