Here is a decent discussion. The STRENGTH trial is the basis.I’d be interested where you read that fish oil supplementation doesn’t decrease cardiovascular risk. Everything I’ve read says the opposite.
Omega-3 fatty acids and the heart: New evidence, more questions - Harvard Health
Omega-3 fatty acids from fish and fish oil have been recommended by the American Heart Association for the past 20 years to reduce cardiovascular events in people who already have cardiovascular di...
www.health.harvard.edu
One could say my statement was correct, incomplete, or wrong, depending on how you want to argue it.
Personally I don't consider Vascepa a fish oil supplement, but rather a pharmaceutical.