"The stupidity tech has reached the level of being a moral hazard, where it really just incentivizes everyone else to be bad at their jobs."
I honestly don't know how Slack incentivizes somebody to be bad at their job.
In regards to the first sentence I assume you mean the venture capital industry? I'm not in that industry but I have to imagine that Slack is not more popular than email or close to overtaking email. I do imagine that it is growing faster than email as more internal communications move to that medium.