I just hope student pilots arnt relying on this website as an actual report for weather.
If they were, they'd be very lazy and stupid wouldn't they, student or otherwise?
Firstly weather forcasts are not a contract, they're an informed WAG (wild a** guess).
Secondly why on earth wouldn't you examine the full data, properly obtained? XCW is a convenience. The responsibility is yours, NOT theirs. If it's too hard to do it properly, then don't do it.
Sorry, that was uncharacteristically rant-like.. the OP probably meant a public-service announcement, not a complaint. But seriously, when looking at *any* data, one should always consider the veracity of the source, doubly so when it might be 'operationally' significant. Or to put it another way, never rely on something unless you know it's reliable!