I really think there's no reason at all to continue with the whole DmC vs DMC drama. Now, the leak is still not confirmed, but since we're all assuming it's true, I think that's all the evidence we need that both can coexist with no bad blood at all.
Maybe DmC 2 under Ninja Theory could happen while Itsuno works on Dragon's Dogma 2, or a new IP, once they're done with DMC V. Who knows. It's a non-issue now that we know it didn't kill the series. If you don't like the Ninja Theory games, just wait for the Capcom ones. It was an actual problem and something I also worried about, as much as I like DmC, but now it's not the case anymore. Just move on, for the love of God.