Skoll Shorties

yes they are, do you forget a lot of them were once draenei?

They were once Draenei. Not anymore.

Sorta like how void elves were once elves, and are no longer, and death knights were once people and are not, and how lothraxion was once a dreadlord, and is no longer.

Void Elves still have their sanity... mostly. Death Knights while forever changed still fight for the living. Lothraxion is the only kind dreadlord we've met so far. There are good demons but they're so rare and so few and most people don't want to see them in public city areas.

Do you forget the horde had a dreadlord in their ranks for many years?

And he orchestrated the Wrathgate. You're giving more reasons on why people don't want demons in their bars or cities Fel!

Death knights have done the same, so have void elves and demon hunters, they show promise and then betray, that is part of trusting someone.

But there is demons that hang out in both major cities, don't forget that the quests literally have you summon the demons in the cities to learn them. Plus the demon hunters keeping wyrmtongue within the cities.