If you are unwilling to recognise the difference in terms of educational vs. artistic content, nothing I say is likely to make any difference. Frankly, it's not even worth discussing.
Andreas
It's not a matter of anyone being unwilling; some people don't agree with you. An image of an allegory of Liberty on the Main Page of a major repository of free images is obviously of value, as our lengthy discussion demonstrates. Snails, well snails are interesting.
As to something not being worth discussing; we make decisions by engaging in discussions.
Fred