Are eggs high in folate, folic acid? I have no idea, actually...BUT I have read that added folic acid/folate in cereals and other foods has been associated with a rise in colorectal cancer. Since the 90s, colon cancer has gone up and it aligns with the addition of folate to all kinds of products. As most of these foods are grain based, primals needn't worry so much, I guess.
Also, flax based omegas are bad for the prostate. Theoretically, eggs with Omegas derived from flax fed to chickens could be a problem there.
This is all based on nutritional articles I have read over the years, but I don't have the time to look them up just now.