The initial bug report is misleading. The truth is that the libtool
archives contain _broken content_ (buildroot paths inside the dependencies)
and hence cause problems.

Actually, the big problem was that they caused libtool to add -lmimedir. I could
not find this lib anywhere in FC and removing the .la files showed that it was
also completely unnecessary.

I thought the general consesus was that *.la should be removed from all packages
because the cause more problems than they solve?

There is no such "general consensus" with regard to libtool archives.
But yes, in many cases they only cause problems and are not needed.

just got back vacations will look into it asap

This should be fixed in the current version...