Speed Runs in Roulette?

[Nekodar]

U are the tank, u are the one who sets the pace, anyone who doesn't like it should be encouraged to get out

True to a degree.
There are tanks that want to speedrun when the others don't want to or are not able to.

Personally I don't do speedruns. I prefer low stress runs.
In duty roulette I've occasionally come across tanks that think they can speedrun, as well as made sure to kick one tank that repeatedly pulled way more than could be handled.
Most of the time they quickly adapt themselves to me as healer when they see I'm not doing what they're used to for speedruns, but seldom any complaints as things proceed at a steady pace either way.

One of the worst type is the ones that pull as much as possible to boss room and try to get the mobs locked out.

Essentially, if anyone wants speedruns, go make a party in the party finder for it.