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SEOs don't write all of that for fun. They write it because it ranks well, because Google seems to favor this verbose blurby content.

The second Google clearly favors shorter answers, SEOs will publish just that.

SEOs go where the wind blows.

I recently searched "Is XYZ healthy?",

I wouldn't expect that to work any better than the other example someone quoted above, where a search for "nice restaurants" returned restaurants in Nice. Put some more thought into your queries. Like most tools, what you get out of a search engine is largely a reflection of what you put into it.

try and use scholar.google.com to find primary literature about... well, anything.

for example: xyz meta-analysis will return meta studies that summarize other studies about xyz

sadly most studies are behind paywalls and only the abstract is visible, but just copy and paste the DOI into sci hub to get the full text