Is it really that bad? I tried three queries.

Can cats eat chocolate? Yields ovrs.com (Oakland vet), purina, webmd, thesprucepets.com (cat blog run by vets), pdsa (pet veterinary charity)...

Can cats eat grapes? Yields top-N dangerous foods for cats listicles from various sites such as pet insurance and cat food brands. A response from a veterinary trust is in the top ten.

Can cats eat paint? Yields all reputable medical sources for the first several hits.

I’m not sure I can square this with your description of ubiquitous spam swamping out useful information.