Personally, I detest speed running. It's why I detest WoW's mythic plus system. it encourages bad habits. It encourages toxic behavior as well. if you don't like the dungeons and just want to get it done as fast as possible, don't run them or make a premade group for them.

Nothing more obnoxious to me than a new to the role tank or healer getting into a speed run that wipes constantly because either the tank or the healer can't keep up, or the DPS is just bad for some reason(low gear, newbie, whatever). It's just a recipe for disaster in my personal experience.

But.... it is what it is. And until SE starts making people care about mechanics, this will continue to happen.