Well, we will see if Ryan could give him some competitive fight. This fight based on the experts is just one-sided, and despite the popularity of Ryan Garcia, he was given +370 to win. That's a huge insult to his capabilities. However, as you said, for Ryan Garcia's supporters, they'll take it as an opportunity.
If you're a fan of Ryan Garcia it is an insult, but if you're a bettor that's a fact, backed by stats, analysis, and past performance of both fighters, no doubt Ryan is a good boxer but on what level? In boxing, there's a level to this and it was proven in his fight against Gervonta that you don't give a fighter an A level who is making his first legit championship fight against a fighter who has over 10 championship fights, the discrepancies is pretty obvious.
In this match, Haney is the A-level here, in boxing or any contact sports there is a saying " To be a man you gonna beat the man" Haney did it twice against Kambosos where he wrestled the crown, and Lomachencko who is considered to be one of the pounds for pound great so Haney is considered the top favorite here.
For Ryan to claim that he is King Rye like what fans like to call him, he needs to convincingly beat Haney, which I doubt he can because his offense is pretty obvious, he sets up the jab so he can deliver the right hook, something that Haney can easily read.
And another thing, Garcia has never fought a fighter who can shift from a normal stance to an unorthodox one effectively, Haney may not be a knockout artist but he is one boxer who can make a good boxer like Ryan an ordinary boxer.