some people came out with that story right after OBL was killed and used things like the lack of evidence of a body, the chopper crash in the compound, no dialysis machine even though he had kidney failure, etc to suggest that it didnt really happen.. then when a helicopter containing "many of the SEAL operators" that were involved in the mission went down, i guess it was too tempting to connect the two...
honestly.. who knows. Only high level spooks/intelligence types really have any idea about what really happened when a news story hits... the rest of us can either take things at facevalue and accept them or call bullshit but either way we have no way of knowing..
its like the Gulf of Tonkin incident that got the US so involved in Vietnam.. it was probably a big news headline back in the day, people would be talking "i cant believe those silly slopes were durab enough to attack us", president johnson is going on TV getting support to push a bill through congress that will get him a carte blanc for military intervention in SE asia, and we all know the rest of the story
then a few decades later it turns out the whole torpedo attack was bullshit and most likely completely made up.. oh well.