She feels that prophylaxis (the correct spelling), meaning keeping harms at bay, or prevention, or keeping what is present and active from developing further into worse forms, is better done for your various comorbidities with a DOAC (Direct-acting Oral Anti-Coagulant) such as Xarelto or Eliquis. These novel drugs are better for the type of thrombosis you want to avoid. The three common variations of anti-thrombin action are the two which which you are familiar, but in recent years there are at least three common novel drugs that actually do a better job. So, they are all 'complementary', but are not good substitutes for each other for all conditions and comorbidities. Where aspirin is good for cardiac health and for helping to prevent stroke, it isn't so good for preventing the type of clotting we get when we are experiencing atrial fibrillation.
My advice, if you would really like it, is to do as your cardiologist/EP suggests. I have been on apixaban (Eliquis) for almost eight years by now. I may be fortunate in that I have no side effects from it, but it is generally well tolerated.
Please consider filling in the blanks in this on-line calculator truthfully and seeing what your score is. If it's higher than 2.0, I can see why you have been asked to take Eliquis. You have the right of refusal, but you must also accept the risks:
https://www.mdcalc.com/calc/40/chads2-score-atrial-fibrillation-stroke-risk