Re: I'm not sure what's worse
"screenshot in a word document"
Older version of MS Paint would default to saving in bitmap format - for a large monitor and 24/32 bit graphics, that would be a large file to attach to an email. Saving in word would compress it so you'd have a much smaller email. It's a poor solution, but for a non-savvy person, it can be quicker & easier.
Nowadays, paint seems to default to PNG format which is much better, so there shouldn't be any need to revert to Word.