I know you have seen this same post in your comment spam. Sometimes I read them before flushing them. This one bugs me. It assumes we are all writing for SEO. As if writing were just a formula of HTML. Writing, making sense, having a voice or something to write about means nothing. You could write gibberish as long as you throw in keyword gibberish and use bold and italics and various sizes of headers.
Stuff like this makes us all seem worthless.
Stuff like this makes it seem it really is all about money.
Stuff like this is why people don’t read and have the attention span of a potato chip.
Don’t become part of the problem. Keep writing for human readers. Let Google find you because someone actually read your work and thought you were great. Anything less is too shallow to be sustainable.