Any idea why so many stupid casting people perform jovi songs?

just turning on my tv today not thinking anything bad, and had to hear a horrible version of BOR.
Really ever since those casting shows start at least in Germany and Austria people start to sing jovi songs (one guy that is a jovi fan s got his own tv show now and sings jovi songs every week). I always loved Jons voice but thought he`'s just cool but not that talented, but since I hear others sing jovi songs I changed my mind.

is that an international problem? I hate that!