These crawls are part of an effort to archive pages as they are created and archive the pages that they refer to. That way, as the pages that are referenced are changed or taken from the web, a link to the version that was live when the page was written will be preserved.
Then the Internet Archive hopes that references to these archived pages will be put in place of a link that would be otherwise be broken, or a companion link to allow people to see what was originally intended by a page's authors.
Please note that if an account has had no updates, no profile image, and there is no intent to mislead, it typically means there's no name-squatting or impersonation. Note that we will not release squatted usernames except in cases of trademark infringement. If your report involves trademark infringement, please consult those policies for instructions for reporting these accounts.
Attempts to sell, buy, or solicit other forms of payment in exchange for usernames are also violations and may result in permanent account suspension.