It is difficult for promoters to create hype after their ward has lost the most important fights and a new star has appeared on the scene - Usyk. Wilder needs to win this fight convincingly, I think 100% by KO to show that he is back in business and ready to try to get back to really big fights. Given that Fury is having trouble finding an opponent (it seems to me that he is simply afraid of Usyk), Wilder has a chance to get a fight against someone from the trio Usyk, Fury, AJ.
True, Wilder needs to impress the audience in order for him to regain some of his popularity and hype. He needs to be the talk of "the town" and to do that he needs a convincing win with an extraordinary ring performance. He must used this upcoming fight as a stepping stone in regaining the popularity and hype to be able to qualify to challenge those who hold the division titles.
Referring to that fight, maybe another reason it's not getting much attention is because it's a non-title fight and obviously no titles at stake. Just my 2 cents though. Correct me if I'm wrong if that was a title fight instead but I'm sure it was a non-title match.
Sounds logical, we all know unless the boxer is really popular, a non-title fight really has a hard time getting hype and attention from the masses.