Oh dear, someone gets their health advice from streamers and podcasters rather than actual health professionals.
The seed oil thing is nonsense.
> Eating clean proper ruminant meat will not be bad for you
Eating too much beef is bad for you in a variety of ways, it's associated with high blood pressure and high cholesterol, cardiovascular disease and type 2 diabetes.
It's frickin' delicious, but it's not some panacea superfood, quite the opposite.