The aides are probably highly educated in the same Universities that have been busy doing other things rather than educate. "We're" being substituted with "were" is pretty obvious. Punctuation errors have more latitude, since the meanings can be easily determined and typically do not cause a casual reader to misunderstand the intended message, serious spelling issues can cause a pause and misstep while reading. I agree that they do need to have better editing and only make errors when it is intentional to send a message.