Embed - it is a feature we pushed yesterday so still no proper documentation on that. It's as simple as importing images -> clicking on an "embed" button and grabbing the iframe code. Requires some technical understanding. We might improve to be platform-specific (Webflow, Wix) if there's a real need.
And as for the guides you're seeing are complete gen-AI slob, I agree. Not something we're that proud of, but mostly for SEO to be able to acquire users at a reasonable price. We're running ads campaigns but with our low pricing, it'll be really hard to be profitable so SEO is one way.