My thoughts:
I don't think the English Wikipedia can be used on articles about bus routes since there are barely any pages that has information about bus routes in Hong Kong.
However, since there are articles about locations (whethever they are roads, neighbourhoods, estates or districts) in the English Hong Kong Buses Wiki, the English Wikipedia has incomplete and simplified version of them. This is the same case as the basic information of bus transport in Hong Kong.
That is why Wikipedia is not a reliable source for editing wikis in Fandom in general. Fandom provides extensive information about specific topics while Wikipedia is just a general encyclopedia for all things.
Update: Move to an another FANDOM account. And yeah, what I said on my plan in editing the wiki was delayed for 14 months until now where I started editing wikis. However, editing is buggy when it comes to using source editor on mobile web version of FANDOM.