Note the difference between "There is one implicit assumption that makes this line of reason not true in all cases", an actual statement from the article, and the modified version "There is only one implicit assumption that makes this line of reason not true in all cases."

You are critiquing the modified version. It seems to me that you are searching for any unfavorable interpretation so that you can offer contrarian dissent.

Note that people have not been disagreeing with your point about the resource cost of representing true information, but also don't think that this is a problem for the article, and object to the unclear way you have presented your point.