[nthj]

I don't know your culture or your boss, but I have worked with people who could not code their way out of a paper bag, and round-robbined there way through DMs to "pair" to complete their assigned work. These people were highly paid and highly damaging to productivity and morale. I suspect I'm not alone, and I'll freely admit I have a large amount of bias in how I perceive your arguments due to that.

I will also say that your mentioned group chats should probably be a team channel, and the responsibility then becomes the Team Manager if the team members don't step up on their own. "#team-channel: @BobTeamManager are you able to help here?" would get a specific team member assigned.