Short answer: yes, but not for the reason it used to.
The old thinking was: Publishing broadly across many unrelated topics instead of building depth in a smaller number where genuine expertise and authority can accumulate. That framing is dated — search engines have gotten much better at figuring things out without hand-holding. But 'search engines can cope without it' isn't the same as 'it doesn't matter.'
What actually changed is who benefits. Map out subtopics and related questions for your core topic before writing, then check which ones your existing content actually covers versus assumes. That's less about appeasing an algorithm and more about not wasting the crawl/attention you already have.
The practical test isn't whether it's trendy — it's whether skipping it creates work for someone else later (a crawler, a future you, a user). By that test, topical authority still earns its place.
Same question, different tool: does generative engine optimization (GEO) still matter?
Topical Coverage Calculator either way — checking takes longer to read about than to do.
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