But you're not taking anything away. They're not locking out content. So you don't get the best gear out of M+. That's not a reason to stop doing them. If that was the case, raiding would be dead.
You're comparing Cata heroics with M+. The reason why Cata heroics were so hard, was that you needed a coordinated group. That's nor your average LFG team. If you did them with your guildies they were quite enjoyable. But you can't queue in M+ and more importantly a +2 still isn't that hard. You can climb it one step at a time.
But I get what you're saying. People are going to be mad. But they always are, no matter the changes.
I don't see how that point remains. He HAD to make the video, because he did stop covering WoW. You can speculate if the reasons he listed weren't genuine, sure. But he didn't farm outrage clicks.