The 2026 SEO Myths Scorecard: 20 Beliefs, Rated True, False, or It Depends

Over the past month we've gone through the most expensive SEO beliefs one at a time. Here's the full scorecard in one place, with a link to each deep dive.

TL;DR: Of twenty common beliefs, ten are false, four are true, and six depend on context. The false ones tend to be outdated tactics, third-party scores mistaken for Google metrics, or claims that conveniently support a sale. The true ones are about helpfulness, links, structure, and the real rise of zero-click search. When in doubt, check Google's Search Central documentation, test on your own site, and ask who benefits from the claim. Start with our myth overview.

Rated false (10)

1. "There's an ideal keyword density." False. Read why.
2. "Domain Authority is a Google ranking factor." False. Read why.
3. "Google has a duplicate content penalty." False. It filters and consolidates. Read why.
4. "Meta keywords, exact-match domains, and hidden text help." False. Read why.
5. "SEO is dead." False, though the old playbook is. Read why.
6. "Publishing more always brings more traffic." False. Read why.
7. "You must rank number one." False as a universal goal. Read why.
8. "An agency can guarantee rankings." False. Read the red flags.
9. "A perfect Core Web Vitals score will lift your rankings." False. It's a small signal. Read why.
10. "An llms.txt file boosts AI citations." Unproven, with no measurable effect in the largest study so far. Read why.

Rated true (4)

11. "Links still matter." True, when they're relevant and earned. Read more.
12. "Better content beats more content." True. Read more.
13. "Internal linking helps rankings and users." True, and it's underused. Read more.
14. "Zero-click search is growing for informational queries." True, though studies differ on the size. Read more.

Rated "it depends" (6)

15. "Google penalizes AI content." It depends: not for AI itself, but scaled, low-value pages are a problem. Read more.
16. "SEO takes six months." It depends on your starting point and competition. Read more.
17. "E-E-A-T is a ranking factor." Not directly, but the qualities it describes matter. Read more.
18. "Local SEO is about tricks." It depends: guideline-compliant basics work, shortcuts don't. Read more.
19. "GEO is just SEO with a new name." Mostly overlap, with real differences in measurement. Read more.
20. "An SEO audit is worth buying." It depends on whether it's analysis or a printout. Read more.

What the scorecard teaches

• Be suspicious of shortcuts. Most false beliefs promise a lever that skips the work.
• Distinguish Google's signals from third-party scores.
• Correlation isn't cause. Top pages having something doesn't mean it put them there.
• Check the date. Search changes, and advice ages fast.
• Measure outcomes, such as qualified traffic and conversions, in a sensible dashboard.
• Remember AI search. The foundations overlap, as explained in how AI search engines decide what to cite and GEO for Marketers.

FAQ

Will this scorecard change? Probably. Search evolves, and some "it depends" items may become clearer as evidence builds.

What's the single best habit to avoid myths? Ask for the source, and check it against Google's documentation.

Where should I start fixing my own site? With indexing, content quality, and intent. See why content isn't ranking.

Can I trust Google's documentation completely? It's the authoritative source for what Google says it does, but pair it with your own testing.

Last updated: October 30, 2026. Ratings reflect available evidence and Google guidance at the time of writing and may change.