He needs a Big L to understand there are consequences, You can't just jump into a universe where everything works out.
I feel like he is convinced that everything hi makes is good, I think this is why he is distancing from FT, just t o show of that FT is nothing compared to his new works, Saying Space manga is most worthy of Anime adaptation (So Shiki flys big deal, hundred of duds fly in Anime).
I doubt magazine will stay silent, we don't know where Red Line is, but it's crossed, Hiro might as well be finished, at best he will remain as Illustrator or Artist, but he wont be trusted in lead writing or having his own manga.