I don't know how much of Arsenal you've actually watched Raya is faaaar from garbage. That honestly reads like a bitter Tottenham fan upset that we didn't get him letting emotion rule over his eyes. Raya isn't perfect like you alluded to but to call him garbage is hyperbolic, Onana has been garbage but Raya has been one of the top 3 performers this season.
He was actually 2nd worse keeper in PL re errors directly leading to goals (3, worse was 5) last season (Vic had zero as comparison). This season he has a good save percentage but so does Sanchez at Chelsea, and in the saves against expected goals, Vic is better than him.
Edit .. they have made memes of his penalty lack of saves
https://www.thesun.co.uk/sport/32760245/arsenal-david-raya-penalty-technique-man-utd/
Yes, garbage is probably hyperbole (I'll own it), but he's not in top 5 in league and I wouldn't swap Vic for him in anyway.