I can see your battle, and feel your pain. If my wife heard that I would have a massive fight to continue. But my argument would be very similar to yours. If I'm going to break then it's because I've overused something through exercise, nit break because I'm carrying too much weight.
Fingers crossed the angiogram gives a different results, and a different consultant clarifies the situation
We all don't really know what we are doing, or what we should be doing, or even what we are doing is right, but we pay our entries, toe the line and give it a go. We then canvass the opinions of those that done really know, implement their advice, not fully realising that we are all an experiment of one, so what works for one won't work for the other, and when it all goes horribly wrong, we'll put ourselves through s whole new hell to see if we can get a different outcome. This sport is just too addictive.