It's a featureful toolkit. Note, however, that technical and legal requirements don't always mesh. And in a world governed by both, there may be two masters to serve. Which leaves your symmetry problem intact by encapsulating it in a larger problem. A related situation is the Debian distribution, in which several licenses, including the GPL, LGPL, BSD, and Artistic License, are distributed as a separate archive than the software to which they apply.
Linkage is via the Debian packaging system, or so the argument goes.
My understanding is that this is acceptable to RMS, he'd raised the issue at some point last year. So you might be right. Note, as above, third party compliance isn't your concern under the three licenses in question. That's a thought. Probably as a fold-out of some sort.