Screen-sharing is part of chat apps nowadays. You’re fully within your rights to stay on IRC and pretend that featureful chat is not the norm these days, but that doesn’t mean society is going to move to IRC with you. Like it or not, encrypted chat apps have to become even more usable for the average person for adoption to go up. This reminds me of how all the old Linux-heads insisted that gaming was for children and that Linux didn’t need gaming. Suddenly now that Linux has gaming, adoption is going way up - what a coincidence.