As you can clearly see, his cap hit is 24m, his dead money is a whopping 23m more than that. That is 47million against the cap in 2017, so let's break down what this means...
The ravens currently have 15m cap space, cutting joe flacco means that we have to clear 32m just to break even. Let's go over this one as well... the ravens have few players they can cut to clear massive cap space because there is a fair bit of dead cap tied up, we would need to Cut yanda to save 2m, doom to save 6, Wallace to save 6, pitta to save 3, Webb to save 5, Suggs to save 1, wright to save 3(need to anyway), zuttaj to save 2, Arrington to save 2, Jernigan to save 1, and at that point you still have to clear 2mil just to be at the cap, and after those cuts there is only savings of fractions of a million, you would need to cut another 4 or 5 players to hit that cap, at this point you literally don't have a team to field.
Now, the draft class usually costs about 8m a year, you have to clear that up as well which would be nearly impossible because the savings just wouldn't be there. But you want 2 first round picks so the required space would be even higher.
I could go on about free agents that would be due that we couldn't resign, but we would've cut them all anyway so it wouldnt matter and the franchise would have to fold and forfeit the 2017 season for not having a team to field.
That is what happens when you take on joes dead cap, this is why nobody is on board with your super duper comprehensuv plan.