At this moment, you will find logical that I am not unhappy about Al-Asad leaving Syria.
Being happy that Assad left Syria is not different from being happy that al-Qaeda has replaced him.
[...]
Meanwhile the Western mouthpieces are trying to change the "image" of the commander of al-Qaeda and ISIS who is now commander of another terrorist group that occupies Syria...

It is very different indeed.
There is certainly a degree of white-washing of the new leadership going on in the West, but people are not stupid - this is about having to deal with who is now the leader on the ground, wheter we like it or not, and having to work with what you have to prevent bigger problems.
After so many years of war, you cannot pick and choose as you wish, but you certainly need to give enough space to have some peace and stability in the region. There is no point in trying to solve Siria by further escalating tensions - particuarly now that Europe and the US have bigger things they need to deal with.