The other band members are aware of the problem but not doing anything about it. One is willing to give the singer more time to improve. The other says "do what you need to do." The singer is also the venue owner and the one with the enthusiastic fans who come out to hear him sing. And you, the new guy, want to fire him.
I'm not saying you shouldn't do it. If the gig isn't fun, you owe it to yourself to either try to improve things, or move on to a new band. I'm just saying that it doesn't sound like you're going to get a lot of support in this situation, so be prepared to walk.
Many a mediocre band member has been tolerated because they owned the van... or the PA system... or the venue... or whatever. This guy sounds like one of those. If he goes, the band not only has to find a new singer, but also a new rehearsal space and gig venue... and maybe a new audience... just saying.
I'm not saying you shouldn't do it. If the gig isn't fun, you owe it to yourself to either try to improve things, or move on to a new band. I'm just saying that it doesn't sound like you're going to get a lot of support in this situation, so be prepared to walk.
Many a mediocre band member has been tolerated because they owned the van... or the PA system... or the venue... or whatever. This guy sounds like one of those. If he goes, the band not only has to find a new singer, but also a new rehearsal space and gig venue... and maybe a new audience... just saying.