I guess that’s my problem. I don’t consider content and keywords to be different topics.
True, as a contrived example, if my page was about “big red widgets” I would take care to make sure the content text didn’t only refer to them as “things” or “items” etc.
I’ve always felt that well written content will automatically incorporate the words of interest that users are likely to search for.
If I felt that more users might be searching for “large crimson widgets” instead, you’re saying it would be better to change the content to at least include those words?