To be completely honest, I don’t consider any name to be bad.
You may say AxCx is terrible name, but once you give them a listen it exactly fits the name. Same goes for Hijokaidan, who are actually named based on one of fan’s suggestion claiming that “escape staircase” suits their sound more. Party Cannon is absolutely hillarious imo, when you look at the logo and the sound. Brojob also has a name that fits their lyrical themes.
In some cases the name may come out a bit lame, but bad names? Nah. I don’t consider any name bad, most of them sound either fucking epic and/or hillarious when you look at the full picture.
Come on, let musicians have some fun.
Just one note. Unfortunate names do exist. If a band has name that is also commonly used to refer to other things, it is really tricky to find them unless they are popular enough. I remember trying to find some music from a band called “6 cylinder”. You can imagine the struggle.