I had a conversation with a fully indoctrinated JW a few years back.
He mentioned that there had then been a recent 'talk' that specifically instructed that the congregation should be kind and understanding to those that attend only the memorial as the memorial maybe the only meeting they are able to attend due to circumstances. No one else may understand their situation.
He also said that anyone that at least attends the memorial, is acknowledging the JW religion as 'The Truth' and is showing submissiveness to God's earthly organization.
During this same conversation, he mentioned about JWs being instructed to do as they are told without question or consideration, even though what they are told to do may not seem logical or is contrary to what JWs have been instructed previously.