Your statements depend entirely on what you classify as a “Hoax”.
If you use “hoax” to refer to invented situations and fabricated evidence to support the acceptance of those situations as true, divorced from ulterior motives such as fraud or controlling people and the like, and distinct from mere rumors and hearsay which lack significant supporting evidence (faked or otherwise), then no, hoaxes are pretty recent.
If you instead use “hoax” to callously dismiss anything that isn’t objectively literally true, ranging from religion and philosophy to tradition and custom to mere differing interpretations and understandings of the world other then your own, then sure, such “hoaxes” are as old as time.
