There is no evidence statins lose efficacy over time. The mechanism of action of all three of these meds doesn't wear off.
Compliance drops over time, with most people stopping taking their statin daily within the first year. Same as blood pressure meds. That's not side-effect related, it's just people feel fine, bp and lipids don't cause symptoms, so they don't bother taking it any more. As a result of failing to get on or adhere to meds, most heart attacks and strokes, 80%, the #1 cause of death and disability, were avoidable. Compliance rates go way up for AFTER surviving a heart attack.
There is very little difference between 2mg and 4mg pitavaststin, and if 2mg gets you below 55, you could argue it's reasonable to take the lower dose 2mg. While side effects are extremely unlikely, if doubling to 4mg only yields 1-2 points less LDL, why bother. On the other hand, I'd drop bempedoic acid in favor of 4mg Pita if it gets you to goal LDL, instead of Pita 2mg + Bemp. Bemp can slow collagen turnover, and in those over 75 there's a slightly higher risk of tendon injuries, and 2 meds are easier to deal with than 3 ofc.
$0 deductible statins for over 40 applies to 98% of health care covered adults in the US. If you're being charged you need to speak to whoever covers your medication. It was part of the Obamacare law.
“Because low- to moderate- dose statins are strongly recommended by the United States Preventive Services Task Force (USPSTF) for primary prevention of cardiovascular disease in adults aged 40–75 years who are at risk, the Patient Protection and Affordable Care Act (PPACA) in the United States requires most health insurance plans to cover the costs of these drugs without charging the insured patient a copayment or coinsurance, even if he or she has not yet reached his or her annual deductible.”