MEMRI is a well-known neocon propaganda outlet, so your arguments merely reflect this.
From Sourcewatch: "Middle East Media Research Institute (MEMRI) is an Israeli propaganda organization that selectively translates materials from the Arab/Muslim/Iranian press purportedly demonstrating hostility against Israel/Jews."
Note how nothing at your 'source' has any evidence that MEMRI tends to mistranslate quotes or provide them out of context.
When it comes down to it, it seems the complaint is that the people Sourcewatch quotes don't like MEMRI's alleged politics, and therefore we should ignore all evidence. IMHO, an ideological echo chamber is bad for the mind.
Easy enough to find, here's an editor of the Guardian calling out the President of MEMRI for just that:
"The fact is that you gave evidence to Congress claiming that Gallup had found "a large majority of the Arab world" who believed the September 11 attacks "were the work of the United States government itself and/or a Jewish conspiracy". What you said is untrue, and Gallup has confirmed that. I trust you will now apologise to Congress for your false testimony. Finally, in the light of your most recent remarks about me personally, I will make clear now that your nationality and religion do not bother me in the slightest. What does concern me is your political agenda, and the deceitful way you go about promoting it."
Regarding the 'ideological echo chamber,' I fully concur. MEMRI's board has included such characters as Elliot Abrams, Donald Rumsfeld, and John Bolton, so the discriminating reader should take that into consideration as well.
Hmmm... looks like it was a Pew poll and indeed, most citizens of Arab nations don’t believe Arabs were responsible for 9/11.
When asked who was responsible, they said “America or Israel”[1]
So while MEMRI’s statement is not factually correct (it wasn’t Gallup and they didn’t ask the question of who did 9/11 to everyone), it’s not that far off base.
In that exchange, both sides agree that Carmon was referring to a poll whose details - even at the time of the exchange - were not publicly available on the net. Given that such finding would not contradict other polls of the time, it's quite possible that this is in fact what the poll found. So I'm not sure this exchange establishes what you think it does.
I do agree that readers should take into account possible biases of their sources.
From Sourcewatch: "Middle East Media Research Institute (MEMRI) is an Israeli propaganda organization that selectively translates materials from the Arab/Muslim/Iranian press purportedly demonstrating hostility against Israel/Jews."
https://www.sourcewatch.org/index.php/Middle_East_Media_Rese...