I think there's some middle ground, some grey area where whether it's alright is murky. It's kind of pulling the rug out from under people when the policy of a 3rd party provider abruptly changes and suddenly tons of messages become available to the company.
There are a number of things I might mention to a coworker over a private IM which wouldn't necessarily put my employment at risk, but would be awkward for management to suddenly have access to.
A couple made up examples:
"I'm super sick, but $boss is really pushing me to get the report out. I just want to go home and be sick all alone."
"I hate management's decision to reduce vacation days. No wonder we can't keep people around here."
"Did you see Tom's email? It's kinda awkward that he thinks he's a strong contributor to the group..."
No they don't, but I work at a large megacorp. At a small 10-20 person non-technology company startup, the admin on Slack is likely to be the owner or general manager. It could be another 5-10 people before a person is hired on as full-time IT.
These are all the sorts of things that you would ideally want management to know about so they can make better informed decisions. Assuming of course that you have competent and trustworthy managers.
>Assuming of course that you have competent and trustworthy managers.
You're begging the question.
"Competent and trustworthy" people won't abuse their power by definition. Anyone who abuses their power intentionally is untrustworthy, and anyone who abuses their power unintentionally is incompetent.
In the real world there are many incompetent and untrustworthy leaders. Slack has no choice but to operate in the real world.
There are a number of things I might mention to a coworker over a private IM which wouldn't necessarily put my employment at risk, but would be awkward for management to suddenly have access to.
A couple made up examples:
"I'm super sick, but $boss is really pushing me to get the report out. I just want to go home and be sick all alone."
"I hate management's decision to reduce vacation days. No wonder we can't keep people around here."
"Did you see Tom's email? It's kinda awkward that he thinks he's a strong contributor to the group..."