That does seem quite bad. The article probably should have lead with that. I also don't want random recruiting firms trying to invite me to DM them on Slack all

That does seem quite bad. The article probably should have lead with that. I also don't want random recruiting firms trying to invite me to DM them on Slack all day long. They fill up my inbox enough as it is. Just another avenue for spam. Hopefully they will have a report spam and shut down the abusers fast. But seems they haven't thought that far ahead yet.