Does this mean that people who were approved for remote work will be forced to come back into the office? Or that people who are supposed to come into the office Jan 2022 will continue to have to come into the office in Jan 2022 (i.e., no change).
I think this is a good idea. Developers should not be able to store something on my computer indefinitely without my consent. This doesn't apply to applications users add to their home screen.
This doesn't "destroy" the PWA ecosystem. Just makes a user's intention explicit when they save a PWA to their home screen, rather than continuing to use it within the browser.
Honestly, I never viewed Slack as synchronous. I kept all notifications off, and checked it whenever I had a few minute break or wanted to catch up on our office's conversation.
Slack allowed anyone to contact me by tagging me or @here, so it was obvious when someone wanted it to be synchronous (therefore breaking my communication), but the grand majority of communication was asynchronous unlike email - which does a poor job of differentiating between messages that should (and shouldn't) break attention.