For those out of the loops, check out this article
The TLDR version is that Waid has apparently bullied Antartic Press into not publishing a comic book by a Youtuber critic who had been critical of Waid's work at Marvel.
The word on Youtube is that Marvel has made Waid delete his Twitter account, but I think the damage has been done.
After this, I can't see him working at Marvel again as, if this is true, he's not only been an asshat, but he's put Marvel in a potentially wonky situation with a possible lawsuit - given that one of their employees has tried to sabotage through intimidation, an independent creator product being published.
It's people abusing their power. And Mark has some and he has his agendas and he is a bully because...well I would need to know him as a real person to know...but he clearly cant handle beliefs that don't fit into his own personal view of the world. Tolerance is never for everyone...only for oneself.