This is the absolute truth of the matter. So many people blamed Johns for the delays and/or Gary Frank's work ethic. The truth was that everything Johns had been building up to since the DC Rebirth Special was gutted when, for some reason, DiDio and Lee returned. Jurgens and Tomasi both shared at the time that they had stories planned and were told abruptly that Bendis was coming aboard. His plans for the Super Family were not at all what I imagine Johns had set up, including Jor-El sticking around. DC would have led to the restoration of the Metaverse/Earth-Zero/Earth-Prime universe with elements of the New 52 that worked remaining. IIRC, Johns was going to return to JSA and he also had plans for the Legion. He also succeeded in making Jason Todd interesting again (at least for me) and I think one of the titles in the post-Doomsday Clock relaunch would have shown Jason's journey to redemption.
Instead, DiDio and Harras bring Bendis in and Rebirth is gutted. I'm guessing someone at WB either hated Johns or loved him so much they decided to move him entirely to the film division. Johns would be great in that role but not as the studio currently runs things. We know he was frequently at odds with the Snyder direction. WB's problem has always been a lack of love for and understanding of the DCU. It's quite possibly the richest fictional universe outside of Star Wars, even more so than Marvel.
Bendis' Man of Steel was my second to last DC purchase. Once Doomsday Clock ended, I stopped buying completely. The saddest thing was that I had been reading more titles during Rebirth than I'd read since I was in high school and college. That line-wide quality was tossed out because of Bendis, King, and Snyder's "vision." I don't think the DCU will ever recover.