That still has more merit than your defense of the Dungeon Finder seeing as your only experience with it comes from a private server. I have no interest in debating with you (as we’ve already tried to no avail) but I think it is important for other readers to know that you’re promoting a system of which you’ve literally had 0 experience with.
First of all I think it’s funny that you invoke “causation does not imply correlation” and then you go on to explain how the timed aspect of Mythic Dungeons caused the rush mentality – as though that mentality didn’t exist long before the introduction of the Mythic Dungeon.
A tool that automatically create groups is not in and itself going to create toxic behaviour. In fact, the party leader of a dungeon in Classic pretty much acts the part of a Dungeon Finder. Unless the party leader asks for advice from the group or if you make recommendations that the party leader heeds the party leader will just invite whoever they deem fit and you have no agency over that whatsoever, right? The Dungeon Finder is just doing that for you, albeit with a lot less fact checking.
If there’s one component that is largely to blame for the toxicity we see in retail dungeons it’s the cross-server aspect. Cross-server is great at reducing queue times but it does severe damage to the social aspect of the game. People you meet through the Dungeon Finder are not relevant to you long-term. So you are less invested in them. And let’s say you actually did hit it off with someone through the Dungeon Finder, what then? Back in Wrath you could not queue for dungeons cross-server.
If you’re not looking for a social experience then the Dungeon Finder is great for you. Why should you care if the tank is a toxic scumbag so long as he gets the job done, right?