With no personal knowledge here my guess is that's just marketing speak, and the real reason it was removed is... well... Slack is an enterprise product and a l

With no personal knowledge here my guess is that's just marketing speak, and the real reason it was removed is... well... Slack is an enterprise product and a lot of enterprises don't want or need this, and the idea of a vector for remote control even being possible just blocks a lot of sales and complicates security audits in BigCo. I'm sure they offered a way to disable it but the feature was still in there so... just my guess though.