Pro tip: Tell me you're new to a dungeon /rant

[Kaze3434]

But I did heal them. They got their regen, e4e, and medica 2 and a good bunch of cure 2 while you are at it. I just switch to DPS to make sure the mobs are dead along with the speed runner while the party does not wipe. The speed runner obviously did not give themselves enough safety margin that is their own fault. Try pulling smaller next time.
I do NOT repeatedly kill them. They can choose to be stubborn and get themselves killed again. Good thing you are not a GM for this game. The other members of the party already objected to the speed run and I am helping them not get abused by the speed running bully.

key point here. you admit to actively trying to make sure that one person, the "speed running bully", dies because you (regardless of what anyone besides that one person said, or didnt say) felt like they no longer warranted healing and the time that could have been spent doing the primary role of a healer was best spent trying to kill them.
another person had already used this before, but you ignored it in your reply, so lets try again. a group of 3 people hop into df, and you end up as the healer. greetings are made, and that magic question asked. "speed run ok?" you opt to say nothing, while the 3 who came in together already know what they want. you stay silent as some kind of test to see what they do. they give up trying to ask and start the dungeon. one big pull later, the tank is dead because of no heals(your regen, e4e, and med II prior/at pull are a pretty weak attempt to do much of anything). others ask what went wrong to kill the tank, only to be met with more silence. shrug and move on. this repeats on the next two big pulls and everyone is noticing that no heals are being given to the tank near the tail end of the pulls.

at that point they have a few options; try and figure out why you keep letting him die, or kick you(and no, its not abuse of vote kick for kicking someone with different play styles, as pointed out by one of the posts in this thread).

looking at how you normally respond, you will largely ignore anything in this post that could paint you to look bad and "defend" new people. while that is fine and dandy, the person creating the biggest rift between vets and new people is you, because you seem to think that new people are somehow totally incapable of using any form of comunication, and place sole responsibility on vets/speed runners. thats not how group content works, and that you think it is ok to do any of the things you do shows what kind of "person" you are.