Speed runs are a particular type of animal and generally those who are asking for extremely over geared players are looking for runs that fit into a specific style. That's their prerogative and nobody is implying that lesser geared people can't even complete the run, we're past "completing" something. Some signs of what a "speed run" should look like, taking AK for example: First boss, dead before large golem gets third AOE off; Second boss, ignoring bees completely if spawned and dead before bees spawn or 1-5 seconds after they spawn; Third boss, dead shortly after second add pops. Those aren't indicative of perfectly executed speed runs but your average speed run. If you're well short of that mark in your group, you aren't quite there yet. Garuda follows some of the same model. If you're ignoring the feathers entirely throughout the first phase and killing her in and around when the second set of sisters pops, that's ballpark for a speed run. These are some of the things people are expecting of those they invite for speed runs and why they are hesitant to invite those who fall below a certain mark in terms of gear. It's a numbers game when completion has long since stopped being the goal, nothing more.
If the person attempting a speed run uses DF and complains they're not very bright because DF is a classic case of "beggars can't be choosers". You get whatever you get and you better like it because you walked into it knowing full well what you were doing. If you DF your expectations should be set to exactly nothing, anything else is a good day. Shouldn't get mad at DF for being what it is, it's actually convenient and helpful when and where it's needed. That's just complaining for the sake of complaining at that point.
- The artist usually known as Angrynixon