In my experience this is something that I do subconsciously but it's often justified. People who write in word do so because they are unaware of LaTeX or becaus

In my experience this is something that I do subconsciously but it's often justified. People who write in word do so because they are unaware of LaTeX or because they don't know how. The first means they are usually not familiar enough with the field to understand that LaTeX is the default. This lack of understanding is then also present in the content. The second reason is usually indicitive of someone who is lazy or is writing junk. If they can't write LaTeX then it is unlikely that they can write other code.