This comes across as an arrogant view point. Would you know how to take off the heads of the engine in your car and rebuild it? No? Wow! I'm amazed that you'd have no idea how to do something that isn't your direct line of work.
People running small businesses that are so wanting for ad buys to work for them don't spend years honing their performance advertising skills. They don't even spend time looking it up to know it's a thing (first time I've heard this phrase myself). They see all of the advertisng they are subjected to about why buying ads is important, and so they start where they can.
Instead of making fun of people for not knowing something that they shouldn't need to know about, why not corner the market by providing non-insulting services to get them the results they need? Or at the least, be able to point people in the direction of where to get those services?
Condescension for the sake of patting yourself on the back is just gross.