Here is the thing: it's not as easy as LDL = BAD. For older people higher LDL is actually protective, for women there seems to be nearly no effect whatsoever. Don't be fooled by simple answers.
Your last statement is in direct contradiction with all of your previous simple answers. Where is there evidence of the protective effect of LDL?
Relevant study: https://bmjopen.bmj.com/content/6/6/e010401
And just one? Lots of studies showing the opposite.
Please link the studies showing the opposite results.
Plus, it could just be a side effect of something else and we don't actually know what the underlying cause is.
Their bodies are decaying, and/or (mostly and) is in a state of sickness, and can't saturate its needs properly because of this, so a higher level of LDL can be indicative of them eating enough to counter their bodies increasing inabilities, or not being as sick, and so forth.
It's a correlation, not a causation.
Here is another review of the literature: https://www.tandfonline.com/doi/full/10.1080/17512433.2018.1...
That sounds like dubious advice. On what basis would you recommend that?
There are healthier ways to have low LDL, namely just eating whole plant foods. A variety of fruits, vegetables, beans, grains, nuts and seeds, and spices is my recommendation.