But it's vector graphics!, you might say. Yeah, like Flash, which ran fine on Pentium II, with plenty CPU cycles to spare.
Pardon me, and I don't say it lightly, but... WTF?!
I get perks like not seeing reaction emojis, gifs, and being able to mute the constant flow of @channel notifications by configuring a list of people or channels from which I am not interested in getting these generic notifications.
Also most importantly, since my company recently shifted from treating us like adults to telling us we must only work on the assigned tasks and for no reason go out of task, I configured it to not join general discussions channels where people ask for help and such things. In theory I'm on them, but from the point of view of my IRC client I'm not.
It re-joins automatically if someone mentions me specifically. Unfortunately it won't fetch the history when this happens so I might need to open the real slack to get the context before I can answer.
Anyway, it has worked mostly fine for me… I can have decent battery life and I don't get most of the useless notifications.