The problem is that the wikimedia format is completely absurd and unreasonable.
Discussion
I have no opinion on the format but the content is valuable so it would be worthy for seeding a free encyclopedia project.
If I would take on that task, I would transcode and maybe crop content in an automated fashion. Wikipedia is just such a big compendium of knowledge that starting from zero is a waste of time. Yes, bias is a big issue in WP but with many thousands of articles it is not an issue. Where would you start if you wanted to have https://en.wikipedia.org/wiki/Navier%E2%80%93Stokes_equations on wikifreedia, maybe even because you wanted to "remove bias"? Maybe wikifreedia could have an "import wikipedia" as an option cause seriously, starting from zero makes no sense at all.
And I put "remove bias" between quotes as I could have written "add bias" just as well.
I'm a mathematician and I like stuff that's free of bias but I also have to agree that "free of bias" is almost impossible for most subjects. For math though - the best proof is the shortest one. That's as close to free of bias as it can get and for math that is also not the wrong approach.
There's no need to directly copy the format. One could have a processing step that refactors it to whatever one considers more reasonable.
btw, I'm not sure what's so unreasonable about the wiki-format.
You are welcome to try and would be very pleased if you succeeded.
this might be useful