It’s common in a lot of MMORPG dungeons.
It’s just a different play style. Some like it, some hate it. It’s really a simple solution, if you want to the group to be forced into your playstyle, put together a group.
No matter which approach Bliz takes, there is a lot of complaining, quitting and gnashing of teeth. It’s too easy, it’s too hard, takes too long, went too fast, why do I have to heal, why do I have to dps, etc.
Going quickly isn’t insta-death for dps. But you do need to know when to dps and when to run to match the playstyle. Or don’t.
Why? We control this. I don’t see this as a Bliz issue. If you or I don’t want to use the dungeon the way others are, just don’t. Find another group. Make a group.
As you intend, you mean. Unless undergeared, they weren’t pulled this way then, either. But, your experience will vary.
It’s very easy to get higher level gear, through various means of playstyles. That’s going to put very well-geared people into situations they didn’t grow into (such as a very well geared open world tank just hopping into M or TW without much dungeon experience). The dynamic has changed a lot. The solution still stands with you have the control to make your own groups to play your own way.