What Cilva said is right, the members were each consulted & signed off on this project before it was finalized and sold.  The issues were:
1. It ended up bigger than they thought it would be- It sold higher than they ever thought it would and of course now they think they should have got a larger chunk of the overall once the 'million dollar album' buzz started and, even though they signed off on it, now they wanted the same percentage of that as they would have got in a 90s major label contract for a "Wu-Tang Clan" album.
2. It ended up bigger than they thought it would be- The press loved the concept and ran with it and I'm sure it gets annoying when you are Wu Tang and the only part of this "Wu-Tang" album you've heard is your verses and the beats you rhymed on but you have to answer all the constant questions about it.  (but that's not exactly outside the process as the beats you rhymed over or what you dropped your verses over all changed on the RZA produced Wu albums too).
3. It ended up bigger than they thought it would be- So when the album is ultimately sold to someone who is, on paper, a hip-hop head who's a head of a pharmaceutical company, and then, after you've sold it, he's revealed in the press to be a supervillain who is gouging AIDS patients and that becomes an international story, it sours the whole project for everyone (although it does shine light on trying to label music as classical art brings the same issues of that era where only royalty/the church/rich patrons were able to commission those works of art and most of them were doing so while exploiting the masses in the same fashion).
I had no clue about the Shkreli of it all prior to the sale & what came out about him, but I warned Ringz these would be the issues he'd run into eventually with the project & the Clan and, while it all came to pass, it's ultimately Ringz' project to do with as he sees fit.  He produced the whole thing, he A&R'd the whole thing, he coached and had people rerecord/rewrite verses to the concepts he was going for on the tracks- it's his version of a "Wu-Tang Clan" album.   Like others said in this thread, it's the same shyt as Math's Wu album- and that came out after OUATIS set a template.
I understand the Clan members taking issue (only because I predicted it knowing them- in reality it just did way better than they thought it would & they should just accept that since they signed off on it before knowing the level it would reach [but that's not realistic]) but the fans backlash has always just seemed purely hate for not being able to hear it.  Not even saying that's not justified to some degree, but, once that format's been established? Stop whining about it.   It's been a decade.  It is what it is.