Most of this information are generated from different source, but are meant to interpret same thing, i.e, every information about Bitcoin should be consistent regardless of whosoever is writing/documenting it.
Do you actually mean consistent or verified, I think the right word here is verified, we have to verify every informations received from anyone or through some of the online platforms we follow before processing on them or work by them, some people will make post and yet will not make an additional efforts towards that to ensure they're having the right and accurate informations with them.
When a none Bitcoin ethusiast is eager to learn about Bitcoin, it's is important for he/she to make proper research as a newbie.
Even at the course of making the research, we should apply wisdom to make sure that we are not relying only on a single source, but make every efforts to clear our doubts by having more than one source to that information we've got.