This excerpt right here pretty much sums everything wrong with Marvel's approach and how they're still making the same damn mjstakes: being openly hostile to editors and potential readers and deliberately being as abrasive and unsubtle as possible when handling the subject matter out of spite, and then blaming everyone else for your failures,when no one wants to read your books.
The article also fails to address that a huge part of the problem with the declining sales is that not miss coming in fresh from the successful comic films are equally as alienated from Marvel's character replacement antics as the long the long time fans, because when they get curious and decide they want to read up on Iron Man or Thor or Captain America, they'll want to be able to pick up an issue and read about the character they just watched, not be told they need to pick up additional material in order to understand why Iron Man is a black girl now, which requires picking up the crossover tie-in event, which requires picking up the prequel to that crossover event, which also requires picking up a handful of random issues from some other character's tie-ins in order to tie-in that prequel to the crossover event, etc... It's not even just the gender and race-bending, however hamfisted it may be, but it's so entrenched into the anti-consumer business model that is crossover events and the clusterfuck that is superhero continuity that even if all the new characters were pale blue-eyed Aryan ubermench the sales would still be tanking because the long time fans hate continuity fuckery and normies don't have time to sort through that shit.
If there was ever proof of this very phenomenon, the whole thing with Ben Riley and the Clone Saga is probably the poster boy for it: Peter Parker finds out he has a clone named Ben Riley who is an exact duplicate of himself in every way, a story line ends with Ben - who again, is exactly like Peter in every way - taking over as Spiderman so Peter can start a family with MJ, and readers flipped their shit until Marvel had to cook up an entire storyline just to put Peter back on the mantle.
Also gotta love how the author gets so close to self-awareness by mentioning that the old Black Panther collections and Wonder Woman traded sold well on Amazon post-film, and that the only trade that did nearly as well was the one Logan was adapted from, but instead of taking this as "hmm maybe comic trades do better when they're about recognizable characters from the films and changing shit around on people is confusing" but swerved right past it to conflate independent comic sales that don't have the same continuity baggage as superhero comics as proof that these recent Donut Steels no one has ever heard of should be bringing in the same numbers as Superman.