Yup, by himself he is not very likable; he's arrogant, violent, lippy, and annoying. However I think many fans grew to like him when Dick Grayson was Batman, because Dick brought out the better side of Damian and they had a funny relationship. Dick put up with Damian's attitude and earnestly tried to make him a better person, and by the end of their partnership Damian admitted to being Dick's friend as well as caring for his well being.
That's also why lots of people were disappointed when Bruce came back because Damian went to be his partner instead, and went back to being the brat that he was before.
I wouldn't worry about it, if Jason can come back then Damian will too. Comic book characters never stay dead. I'm also waiting to see how soon DC realizes how ridiculous the reboot is and brings wally back.