At least Muhammed Madani Miyan is an Aalim & also a Sayyed. And (differences apart), he is indeed striving a lot for Islam. Which in a way "entitles" his followers to claim him to be Shaykh ul Islam. (They are not calling him Shaykh ul Aalame Islaam)
do we have a rule that at any given time, there can be just one Aalim conferred with this title?
On the other hand, we have complete idiots, jaahils and (unfortunately) even Murtads being called Mujaddid, Shaykh ul Islaam, Ghaus, Qutub etc...
In some cities in the sub-continent you will find a qutub in every street.......... indeed a very sorry state of affairs.