Maybe. Maybe at the time the dietary laws were introduced to the Judean Hebrews, their observance was questioned by some saying, "so on whose authority must we observe these rather restrictive rules?" After all, the rules prohibit eating otherwise acceptable protein sources available in an area not necessarily known for its pleantiful food sources regardless of its designation as the "Land of Milk and Honey." And they probably said, "Hey, look, my neighborhood, Ahmed the Moabite, regularly feeds his clan roasted camel meat, bbq pork ribs, catfish fillets, fried bats, lobster bisque, and roumelade of rabbit with no ill effects. Where the heck are you coming from with all these dietary restrictions, Moshe?"
If one reads Exodus, one finds Moshe repeated retort to such questions was that he operated under the direct authority and advice of YHVH. So apparently, "devine intervention" was the customary method of prosecuting the enforcement of new rules at the time.