Obviously, some of the examples of their enforcement will seem silly. But it really is up to companies to protect their copyrighted names and trademarks. Right now, for example, DCX has quite a bit of equity in the name 'Hemi'. Imagine if a company wanted to make 'Hemi' cell phones or 'Hemi' computers (or worse...). It would dilute the brand name, and take the image out of DCX's hands.
The tricky thing is...If they choose to ignore some unauthorized usage of their name (or trademarks), it sets the precedent for anyone else who uses it. Another example: DCX did not go after Hummer when they started copying the 7-slot Jeep grille for military vehicles. Then, when Hummer started making civilian vehicles, DCX filed a lawsuit for infringement on their patented design. They lost the case, because they didn't pursue it the first time, thus setting a legal precedent.
It certainly does not make sense for DCX to go after car clubs and such, and they've been pretty good about not doing that. But they do have every right to control the usage of their names, trademarks, and patented designs. So I don't think it makes much sense to chastise them for it, and I can assure you it has nothing to do with the current financial situation. They actually started taking increased action on some of this a couple of years ago.
Just my
-Tom