http://bugs.winehq.org/show_bug.cgi?id=16977
--- Comment #8 from Thomas Spear Speeddymon@gmail.com 2010-09-13 11:35:43 CDT --- Then I disagree with your assessment. If something is known to cause issues, even if it's just spamming messages across the console, it should be off by default but easy to enable. winetricks makes it easy to enable.
IMHO, turning on MS by default is akin to turning on WINEDEBUG=+relay by default.