Not really. Kenpachi simply wasnt meant to die. Thats the same reason Byakuya survived after fighting As Nodt. And lets be real here, if plot wasnt a thing and Gremmy imagined Kenny dead, or his bones cookies, he would've won, easily at that.
Not to mention, full power Gremmy was stated to be the second strongest sternritter and Yhwach to be the only character capable of stopping him.
Add on top of that the genius intellect of multiple characters in HST that assures visionary wouldnt be used by an inexperienced and PIS-ed idiot.
@takenstew22: HST cant tag him, ever. However, with the Almighty HST could rewrite the future so the attack hits. There is also the visionary, which doesnt require tagging. You imagine something- it happens, essentially reality warping. It has some pretty good matter manipulation and transmutation feats.
@takenstew22: The thing is, his only hope would be Hakai (if we talk about composite canon Goku, which is what op means... i think), since composite HST is intangible. Hakai was shown to work on a ghost (who's also intangible), however even Shinigami couldnt interact with Lille (in Bleach, there are things called spirit ribbons, they're both intangible and invisible to normal human, Shinigami can view and interact with them normally and even they couldnt touch Lille). There are also other abilities that might cause problems if Goku tries to Hakai and it gets through the "intangible" intangibility. And on top of that, a Bleach character called Aizen has an interesting feat i posted above.
@gaoron: Composite means at his strongest. Which normally includes every different timeline and game dedicated to the verse. However, when you add canon feats, you remove the non-canon stuff and you're left with composite canon Goku.