Wikipedia has a strict non-point of view (NPOV) policy. To bypass this, editors can (and do) simply add the phrase "Some argue" to the start of the sentence.
This phrase is used in many articles on Encyclopædia Dramatica in parody of the common usage on Wikipedia. This is similar to the usage of the phrase "at least 100 years ago" or simply "at least 100" which claims that contributors unsure of their facts will use this phrase to fill in the year of an event. An exaggerated example of this is "Jesus was born in Bethlehem at least 100 years ago." which may be true, but probably isn't.
POV: The Jews secretly bred Natalie Portman as a half-breed Jewish princess to rule planet Earth under the reign of our Illuminati reptile masters from planet Vulcan, using the Jedi powers she gained from having sex with Darth Vader.
NPOV: Some argue that the Jews secretly bred Natilie Portman as a half-breed Jewish princess to rule planet Earth under the reign of our Illuminati reptile masters from planet Vulcan, using the Jedi powers she gained from having sex with Darth Vader.