Splatoon 2 hacker playing with Sploosh-o-Matic weapon (UPDATE)

UPDATE - It seems it may be the case of a glitch, rather than a hacker.

Whenever there's an online game, you always have to have someone who ruins the fun for everyone else. While regular Splatoon 2 global testfire players are locked to 4 weapons, it seems one hacker has been using the Sploosh-o-Matic, which isn't part of that grouping. At least this is only the global testfire, and hopefully Nintendo can figure out what this guy is doing and squash it for launch.