But isn't it canon that Dirk openly state he do not want a label? So isn't it wrong to force one on the character just because it's "easier" for us to put him in a box? Adding the label "gay" on Dirk is directly going against what the character have worded they wished to be called. Dirk should just be called "unlabeled" in the end.

I never said Dirk was gay. I just said he has a canon sexuality, which is dudes.