What i discovered was all of my applications that use log4j do not use version 2. They have out of date dependencies or use slf4j. I'm not sure how i feel but mostly happy im not scrambling. I wonder what adoption rate v2 actually has.
It scares away people who see 'GPL' and refuse to read further, perhaps. Not only is it dual licensed, but both licenses (EPL and LGPL) freely allow linking with proprietary software.