Araki really fucked him by making him provide all the comic relief this chapter, but he can still be in the limelight and I bet he will, he just lost one arm and that doesn't even affect his stand since it just screws and unscrews things.
Man I was excited for a Joshu redemption arc or something where he suddenly becomes great. Instead he's still awful but was used to show the power of the new rokakaka. Not a problem at all though because he loses a whole arm for being a fuckin weirdo lmao I love JoJolion