Most of their articles and videos seem to be quite objective. Might be run as a way of raising awareness (every once in a while) of Middle Eastern progress, but I certainly wouldn't call that propaganda.

Their reports on Israel and the Syrian civil war are a very one-sided.

http://www.aljazeera.com/topics/regions/middleeast.html

They try to be objective, but nobody blames any media for siding against ISIL.

As for Israel, I feel like Al Jazeera isn't one-sided; there simply are more articles about Palestinian deaths because there are more Palestinian deaths. Even when around 20 Israelis across a few attacks died at the end of last year, with each death heavily reported around western media, a comparative death toll puts it into perspective: http://www.aljazeera.com/indepth/interactive/2015/10/mapping.... It seems that one side simply has better weapons, and so, causes more deaths.

No, it is entirely true.

Might be. But it does not matter that much. A sheikhdom is something else than your regular dictatorship. As long as you stay away from critizising the ruler directly, you can talk about pretty much everything (depends on country of course). Dubai/VAE, for example, feels like an "ok" free country to me, even if it is an absolute monarchy.