Ya, you got it in your YouTube box. That's the tricky part. They want you to believe that the band is totally out of labels or whatever. That's still a form of promotion. Real artists don't ever promote themselves by using the YouTube Inbox.
They also made themselves music videos. Nobody makes music videos, especially that professionally, unless they are connected somehow with the same professional people as those who work on music videos for Asking Alexandria, Chelsea Grin, etc.

"If you like hardcore music,try HELIA" Funny, because they don't even play Hardcore music. They want you to believe they play Hardcore - Hardcore Punk Rock, as if they play any punk at all... By popularity, people say it's Post-Hardcore. That's not true either.

Hopefully, you get what I mean. It's much easier to understand if you know and understand many different types of scenes.

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YouTube: [link]
Last.fm: [link]