When to look for the ball comes down to timing and knowing routes and combinations of routes. That can be taught.
There is technique in high pointing balls, setting up your hands, positioning and the like that can very much so be taught.
OTOH the apex of Baker's jump and how much momentum his little body can absorb before being driven back are what they are.
If Obi can not speed up recognition and his mental processing all of his tools and athleticism will not help on the next level, time will tell.
Baker, though undersized, is a play maker and has excellent ball skills, this can not be reasonably denied.
Brugler on Obi:
WEAKNESSES: Not explosive and more of a one-note athlete – tested much better than he plays…doesn’t trust his reads and waits until the ball is thrown before committing…hyper-conservative and often attacks at half-speed to limit mistakes, sacrificing yardage…routinely late to the sideline…eyes pay rent in the backfield…achieves proper position and locates the ball, but his marginal ball skills leave production on the field…hands-on approach downfield will attract attention from zebras…passive working through traffic and late to locate blockers…bad habit of stopping his feet at contact and needs to better drive through his man.