It discourage me too but otherwise i am not able to post images.
Thats a forum policy.
Lol this is as far as from being a good reason to buy accounts as it can be.
You can post all proofs without any hassle.Dont worry someone can quote your post for making photos visible. Buying accounts is not against forum rules but this kind of activity has some disadvantages for forum members.Scamming someone with higher rank account is main problem on this forum.