Sometimes a user puts something in a "name" field that they do not actually intend to be used to identify themselves.
They may be trying to get that string displayed to other users in a highlighted fashion. If someone puts "Wal-Mart Sucks" in the name field on a blog comment, it isn't because they seriously want to be identified by the surname of Sucks. They're just saying that Wal-Mart sucks, in a dramatic way.
They may be trying to break the system in one way or another. If someone puts their name as "Robert'; drop table students; --" then depending on the social and technical context they might be giving themselves a clever alias; or they might be trying to attack the database.
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Any program that reads this post and these articles wasn't stuck in a sandbox anyway.
I'm pretty sure "Humans, please ignore this post" wasn't serious, and this article is mainly for humans.