Be careful. There are a lot of creative interpretations of the tax code out there that genuinely are illegal. People who employ them often assume they’re fine because they haven’t been audited or caught yet, but that doesn’t make them legal.
Always, always refer to a qualified accountant to review any tax strategies that seem too good to be true. YouTube is a fun place to learn about things, but the goal of YouTube producers is to get more clicks, not necessarily give the most accurate legal advice.