I'm with Felipe on this one. Not only because I endorse free software but also for practical reasons. Supporting proprietary solutions just because of technical reasons might make it harder for FLOSS alternatives to mature if there's a handy proprietary driver/API in use. I wonder who would feel attracted to code optimizations and improvements if the application already works great with that proprietary addon. I also wonder how supporting proprietary (mantaining compatibility with free) impacts on the complexity of the code and if it doesn't add more work to the few developers the project has, even if somebody comes and provides the code.
I'm convinced that some short term solutions like this could have a very negative impact sooner or later. nVidia has a good damage record with its proprietary drivers in linux: They work pretty good, so having a free alternative never felt as a real need, and there we are. Intel has better free drivers but inferior hardware, so if you're planning to do serious 3D you have to buy nVIdia or ATI and deal with their non-free drivers. Technically you have the option, but in practice it becomes a hard dependency.
I don't think this is a political statement by itself, but coincidentally the political statement leads to the same conclusion.
I'm glad to know that FLOSS is priority anyway. :-)
Just my 2 cents.