By that logic assuming they’re uninformed based on what they didn’t say is just as silly as saying that they are informed based on it. What they did say wasn’t wrong, so there’s no reason to automatically assume they don’t know any more than what they included for general audiences.
Bruh, this isn’t an instructional video it’s an informative one, there’s a difference. You’re not giving me a recipe in your bizarre metaphor, you’re just generally describing what a grilled cheese is and how it tastes or why people eat it. You’re not teaching people how to recreate a grilled cheese perfectly. If you left out the part where you put butter in the pan I would just assume you left out the part where you put butter in the pan, because your audience isn’t there for a recipe and doesn’t give a shit about every possible minute detail.