Imo ABS wanted to change its format, and they needed to because the show wasn't exactly great from how they handled the competition, the rules being a bit unclear, and all of that. Very likely they decided to change the face of the show too, also to ride the wave of the social justice movement, or whatever you want to call it, asking for more inclusivity in the industry (not a bad thing at all, as long it doesn't become just a business strategy to get publicity). That's the more logic reason they chose Ashley Graham, because honestly you can't say she is even close to the talent or the influence in the industry that Adriana has. Nor the experience, I mean the shw host was a judge there too, and she is way more qualified for that because she is a 20 year veteran and has literallly done everything you can do modeling-wise: commercial, high fashion, lingerie, swimwear, more conceptual work, just name one and she has done it.
I hope she gets another show, she wasn't bad at all as host, ok she isn't Heidi or Tyra yet but they have decades of experience in tv, and seeing how much she changed in just 10 episodes filmed in two weeks or something, she definitely has the potential to florish even in this field.
Said that, make her play in an action or historic film/tv series with fighting sequences and I will literally die lol
Even as a superhero: Lais was offered last year a superhero role in a tv show from what I red in an interview, it didn't say which one, but she declined it because she had probably too many contract limitations (thanks VS, you robbed us again...)
Back to ABS, imo it wasn't a decision she agreed much with at first, we know she unfollows quite often but she was really invested in starting this new project, she proved that even trying to be more active on social media at the time to promote it, so when she unfollowed all the ABS accounts it wasn't without reason imo. She still is executive producer to my knowledge tho, so I guess she is happy for now to earn a bit from it without being the face of the show. But I am not expecting to see her promote this show again or be a part of it in the near future.