There is always an option. Threaten your employer you'll leave if they make you use Slack, quit programming and become a farmer who touches grass every day.
All this Electron app complaining reads like First-World Problems(TM).
Overly-reductionist arguments are not helpful. Suggesting that I quit my job because I disagree with the tech stack of a billion dollar company might be one of the dumbest things I've seen on this site in the 15 years or so I've been here.
You know we can read back the comments that were posted in this thread and check your response against the context, right? You just moved the goalposts from being willing to pay for the product that would need to be changed to address the complaints, to refusing to use the software complained about.
I'm not moving anything. Parent obviously doesn't want to pay the millions Slack would probably ask to make it "efficient" (whatever that means), you say parent has no alternative, I'm providing alternatives.
Or one can go back complaining "how the world is cruel, people are mean and greedy, I'm a good and misunderstood person which writes the most efficient and user considering software, unlike the evil people at Slack"
All this Electron app complaining reads like First-World Problems(TM).