I don't follow PokeTubers and didn't know about that! But regardless TPCi makes their own decisions. They're not going to refuse printing a deck because of public pressure from a YouTuber. If they chose not to print it, that's either because the accusations are warranted or it just doesn't fit their selection. Maybe a Malamar deck isn't as marketable to them.
EDIT: If he was banned then yeah, they wouldn't print his deck lol. They wouldn't ban someone because of public pressure, they'd ban someone because they felt there were warranted reasons.