the screenshots of people replying to him who clearly know he's not slackbot, including calling him Tom, kind of contradict the headline here. he was clearly not "undetected".
we've got some former staff in our slack still. they check in and say hi every now and then, it's nice. if one of them started pretending to be a snarky slackbot one day, we'd probably have a laugh about it too.
Same here, slack is not our main communications channel but it was used for some external consultants. And sure enough people who had quit were never kicked out so they just continued planning lunches together.
we've got some former staff in our slack still. they check in and say hi every now and then, it's nice. if one of them started pretending to be a snarky slackbot one day, we'd probably have a laugh about it too.