Good article.
Being a veteran of the old school metal scene here, Thristy Whale, Iron Rail, Chances R, Metro (circa 80s), Exit (when it was on Wells st) etc... The original scene had a couple established bars which were the place for metal and they stayed that way for a while. Unfortunately when these places closed down like the Whale, Smilers, and others the "scene" faded away. Even now we still have places that used to support metal that are still iffy about it, Joes on Weed st used have a metal night and get national acts in, Metro geez they get 3 metal shows a year, DoubleDoor has hosted the AleHorn fest now for 2 years but still not easy for local metal bands to get into. Its hard to get a scene going when there is no infrastructure to support it.
We need is to have have dedicated metal nights at more clubs and more venues to start having metal acts. As it is right now there are small pockets for the metal scene like Lansing and Mokena, some small areas in the city. The Metro and Joes needs to start working on getting national acts back in the City, Pearl Room is an excellent venue however for native Chicagoans they're not going to hit PR after work to hang out and see whos playing there for the sake of going out.
There are lots of good Chicago bands though the scene isnt what it used to be and its not the bands fault.