I don't understand your question. For the first 19 posts, you can edit certain parts of your profile. Other parts are not available at all, so no edition is possible anyway.
From the 20th post, you can add and edit more info. This is to reduce spammers, and unfortunately valid users get the unwanted consequences of this decision. It is, nevertheless, a balance between options and spammers. There is nothing we, common users, can do about it.