That is true. I’ve become more wary of any claims, even where items are certified to be one thing or another. Pigments may be toxic in many ways. Some are safe to handle, but you don’t want to breath in the unprocessed powder, or ingest the paint. Wording in claims may be legal, but convey a false impression.
I think it’s best to assume a degree of toxicity with any paints and take care.