All diet recommendations are based on bad science because all nutrition science is bad science. That includes whatever your preferred diet is.

That guy has a serious axe to grind and isn’t a credible source.

But what you are responding to doesn't say "saturated fat is harmless or even healthy". It says there is little saturated fat in eggs.

Eggs are very high in cholesterol, which is mentioned explicitly 136 times in the link I provided.

Which is irrelevant, because the cholesterol we already have by other means is much much higher.

Considering eggs a problem for that (their cholesterol content) is like having a program that takes 20 minutes to run, and trying to optimize a routine that only accounts for 5 seconds of the overall time.

Baseline cholesterol levels are genetically determined, it's true, but diet is far from irrelevant. A cholesterol-rich diet can easily push your overall cholesterol level above that baseline into the danger zone. This has been verified in numerous gold standard direct intervention studies. Anecdotally I have several friends that have brought high cholesterol levels down through diet far enough that they didn't have to take statins.

Most of the studies that have claimed to show that diet doesn't raise cholesterol have involved populations of people that already have abnormally high cholesterol from a bad diet (i.e. the typical American).

Important points summarized here:

https://www.youtube.com/watch?v=vBtfzd43t8o