Man, there is denying reality and then there is this shit.
I can promise everybody, be it Shanks, Xebec, Roger, whoever the fuck you wanna pick. There will be 100% more examples of Zoro using non-sword attacks or moves than any of them guys.
Xebec holding a gun does not make him into a non-swordsman. "Shock wave style" swordsmanship? Is still swordsmanship.
The war is over. Sword-piece is real. And it won. Get over it. Like, genuinely, it is not that serious. Its okay to accept reality.