And working with someone else, we found that if you attach the photo via the paperclip, it actually sends the photo HM rather than just linking the place stored on taptalk to your post.
as when you attach the other way you are just inserting a link to the file storage place on taptalk, I even verified this and can change the link on it to another picture if I want.
why it is visible while being quoted is unclear to me at this time.