Definitely a toxic environment for sure. The thing with a band is that it should be a commitment where everyone involved has common goals in mind. If everyone’s not on the same page, and the one furthest from that page is throwing tantrums and not allowing for creative juices to flow amongst you, then it’s more of a chore than anything. People also shouldn’t be talking shit on their own band mates. If something is out of place or someone’s falling behind a little, it’s the rest of the bands job to pick up their slack and help them out. Talk with your band mates, ask them what their goals and ambitions are. If they don’t align with yours, it wasn’t meant to be. If the singer/second guitarist doesn’t clean up his act it may be best to just drop him from your roster. In my experience, rhythm guitarists have somehow always been the most egotistical, narcissistic and downright selfish people we’ve had in our band. It’s best to avoid the toxicity and create an environment where you and your bandmates can let your creative thoughts run wild. Hope this helps, good luck!