I also have a low opinion of jira, but I don't agree with this list at all. I refuse to use jira because it is over-engineered and is generally used as a crowbar to foist non-technical influence upon technical teams, at least in the sites I've seen. Jira is in my opinion a fatal source of friction to the production of reasonable software.
That's not what I'm getting from this list.
Worse, almost all of the points (all maybe? Haven't checked) declare that something is "missing".
Please god no.
Jira isn't missing more features. When you make a list like this, some product manager at Atlassian is going to turn it into a bunch of scrum epics and jira will be even worse in 12 months.
Well, not explicitly. But you can respond with a set-cookie header for the same session id, with an expiry in the past. Browsers will purge expired cookies.
Whatsapp's value to me was negligible (that isn't to say I wasn't using it quite a lot; it's value was just low).
So I'm removing it and not replacing it.