I think the notion of not changing (improving) your diet because statins are doing their job, disregards the other impacts of a healthy vs unhealthy diet. If the only thing at all a healthy or unhealthy diet impacted were limited to only the same things statins impact, there could be a case. However, we know diet impacts numerous other systems and factors unrelated to the measurable benefits of statins. My cholesterol is 100 due to statins. My CAC says I'm in the 99th percentile for heart attack risk. Am I free from risks of my dietary choices now? If I go high carb what happens to my risk for diabetes? Personally, my goal is overall wellness, not only the numbers we measure from statin use. I can do a lot of damage to myself, apart from measurables from statins, with a poor diet and conversely have a lot of benefits and increased quality of life from healthy eating.

The question was posed specifically regarding cardiovascular risk. If we do not look at overall wellness and limit this discussion to only cvd, the answer is, "Are there cvd factors unrelated to statin use which are impacted by dietary choices?"