I'm not exactly a SW fan so my knowledge from the EU is very limited, but I'm familiar with the canon.
Even still, how can we be so sure Bail Organa actually knows where Obi-Wan is? Like, it'd make sense for him to but seeing the importance of Obi-Wan staying under the radar it seems an unnecesary risk.
Also quite curious that all the holocron showed them was Obi-Wan. Not in regard to Maul's desire, but that of Ezra. Why did he see Obi-Wan instead of Anakin, who is the actual key to the Sith's destruction.
I'd like to go ahead and theorise that Ezra needed to see Obi-Wan as well so that he can go there and stop Maul from doing whatever he plans to (obviously kill Obi-Wan), so Obi-Wan can actually go ahead and do his part in the prophecy regarding the Chosen One (introduce Luke to the Force). Would be the most convenient way to make both Ezra and Kanan's existence relevant in the grand scheme of things.
Also worth noting is that both had half the information required to see the bigger picture. Maul actually saw Obi-Wan, but not where he was, whereas Ezra did see the location (twin suns), but not Obi-Wan himself. Kinda weird, since both actually vocally expressed what they saw. Perhaps they weren't able to hear what the other said. In the end, Maul has the upper hand because he identified the twin suns as Tatooine because of The Phantom Menace.