Is there an official streamlined/simplified version of the D20 system? was actually answerable by a yes-or-no response with some backing evidence. The OP even grants that an acceptable answer ("no") was provided by a moderator in the comments.
Nonetheless, said moderator put the question on hold -- with no other votes -- as being a "shopping" question. Not because it's actually a shopping question, but due to fears that it would be turned into a shopping question by respondents. ("But that's not what our helpful members would answer with — they would say no, and then start compiling all kinds of 'but this 3rd party variant…' material...")
As a more general observation, the moderation on RPG.SE is completely out-of-line with any other forum on the SE network, being vastly more draconian than any other community in its application of the rules. Will this aggressive level of hyper-moderation continue to be the norm?