You're entitled to believe whatever you choose to but as I said previously, never conflate quality with quantity.
Marvel's primary objective as a company, is to turn a healthyear profit whilst appearing dedicated to diversity amongst their creative teams as well as within the books they publish as well.
To achieve said diversity objectives, they've reached out to writers from different ethnic, religious, gender and sexual orientation backgrounds in the hopes that these moves will attract new and diverse readers to their books which is in fact quite laudable and in the case of Coates BP, obviously financially successful.
Unfortunately, Marvel have also lost sight of the fact that long term readers who in many cases have been following these characters and their books for decades, now feel short-changed and in some cases, totally disrespected by some writers who exhibit disdain for the source material that predated their arrival on the scene.
Coates as far as most long term BP enthusiasts are concerned, falls into this category.
Kasper Cole was 100% right about T'Challa's MCU appearance in the Captain America: Civil War movie sparking an interest in the character amongst the general movie going public.
Calls for a Black Panther movie prior to Coates arrival denote that the character was always Popular regardless of sustained editorial sloppiness and pushback on the part of some creative teams from other parts of the Marvel family who refused to be professional.
Coates twitter followers and associated cognoscenti have contributed to the books massive sales but that in no way should serve as any indication that the finished product is anything but the false narrative dependent twaddle that it is.