Humans have been eating saturated fats since before we were human, before we were hominids, before we were primates, before we were mammals. Seed oils have been around in quantity for a little over 100 years. Rapeseed oil/canola was poisonous until the 1970s. The claim that a fat that we have been eating forever, the form of fat that our bodies choose to store is bad for us, and that we are better off eating oils that were never part of our ancestral diet is an extraordinary claim. There has never been proof the match that claim. For 50 years, it has been the dietary advice, and millions has been spent trying to prove it. It has not been proven. I think at this stage we can should agree it's not true.
The NHS tried to "debunk" a paper saying the the dangers of saturated fat were unproven, but they failed. They had to resort to "fat makes you fat" by then end, but as anyone has gone LCHF can attest, it doesn't.