I wonder how many potential answers to such problems are out there, known to a few but not acted on by the masses.
Multiple surgeries is not sustainable. Too much uncertainty.
I'm not sure where this is coming from. Multiple cardiac bypasses have a ton of uncertainty, but they are effective because efficacy is measured by quality of life * increased lifespan.
Multiple surgeries (the time it takes to regrow major veins from capillaries that aren't blocked off) to relatively non-lethal parts of the body seems very sustainable for a human lifespan after 60 or 55 or whatever.