I don't think anyone claimed to be 100% certain that was the cause (feel free to correct me if that's wrong). Given the obvious similarities between the two in

I don't think anyone claimed to be 100% certain that was the cause (feel free to correct me if that's wrong). Given the obvious similarities between the two incidents (same phase of flight, same apparent pitch control problems, known issue that would result in that behavior, etc), I don't think it was unreasonable for people to point out the likely connection.