The situation's aren't even comparable. Wilder isn't making $10 million from fighting Helenius, he'll be lucky to make 7 figures. Also Helenius is a mandatory for the WBA, which makes it rather bizarre why he'd put that status in jeopardy fighting Wilder, nonetheless, 1 win and he's back into title contention, probably against Dubois the current interim, which isn't going to sell much either... He'd be lucky to fill out Barnes Park never mind an arena, Dubois will sent to an early retirement.
Whereas there's not really a path for AJ to go down, Hrogvic is a mandatory from Saturday night, he has absolutely nothing to offer to drop that status, Joyce v Parker are fighting for mandatory for another belt, and Fury's belt won't have a mandatory challenger for a long time as it was the most recent one.
All 4 paths for each title is roadblocked.