IMHO they missed the fact that power users would have preferred the old behavior and didn't provide the opportunity to switch between the two behaviors
This. Power users (normally engineers) drove Slack usage at my last company. I'm now in an org that uses Teams and all the engineers want to use Slack. Likely won't happen but it's important to note that this feature isn't just annoying a small segment of users, it's annoying the small segment that are most vocal about adopting Slack. And who due to economic power arguably have more influence.
The problem with that is Slack no longer needs a small segment of vocal users. They used to, but now they're a huge established company with plenty of service contracts across tons of industries.
I'm not sure how Oracle really squares with that theory. From what I've seen, courting executives can work pretty well for companies widely hated by users.
They can be vocal about getting people out all the want, won't make them effective at it, especially if most people don't understand why power text editor users hate WYSIWYGs. Once contracts are inked and the whole company gets hooked on something like Slack good luck getting it back out.
"engineers" drove your company to spend money on a chat tool from a company that had leaked private chats, gave no real control over the interface, and used a closed protocol? Now those same people are complaining about it?
