yeah the latest research is saying that dietary cholesterol is not the evil it was once thought to be and that trans fats and sugars and homogenized milk are. of course that's generally speaking and depending on each person's personal chemistry and diet.
personally i love eggs and hadn't eaten them regularly for about five years cause of the piss poor quality of the supermarket eggs available. last two years though i'm onto some really good eggs and eat at least a dozen a week. my numbers are virtually the same. i know a girl who's doc wanted her numbers to come down a bit . she eats eggs and meat and butter regulary but removed all processed sugar from her diet and her numbers came way down. not scientific i know but personal experiences i know of.
back to eggs yolks your friend may have been thinking of oxidized cholesterol which is pretty bad for you. from what i've read cholesterol will oxidize when exposed to high heat and air at the same time. so they say soft boiled or sunny eggs are the way to go, but omelets and scramble eggs are not healthy. especially since there's iron in the egg white which when mixed with the yolk only furthers the oxidation along. best way to eat the yolks is raw/runny. if you get eggs from a healthy animal there's no problem with that.