I hate new features in familiar applications. I think it’s marketing you are referring to, not consumer demand. While I’m only positing an anecdotal personal reaction, I’m also not seeing data behind the premise you proposed.

Slack is puzzling to me, as it’s a terrible product, IMO, which I feel bandwagoned from a few top down decisions by some larger companies to risk their essential internal communications on a third party proprietary app. It makes no sense to me and I would never specify it’s use on any team I lead.