I don’t disagree with holding those implants to high standards and reliability, but think of it this way:
My iPod is great, and has worked great for over a decade and it’s still going strong. However, I don’t think it’ll be around long enough to get passed down to my grandkids, but my wrench set probably will.
That’s my point. You can’t hold complex electronics to the same lifespan as a wrench, or replacement hip, no matter how well built they are.
Which goes back to my original comment about mandating sufficient warranty and replacement inventory being required for all existing patients.
Unless you think a better alternative is just to tell patients that’s instead of doing something within our technical grasp, with a legal safety net, they’ll have to wait until we develop artificial eyes that can last 80+ years, which may, or may not, happen within this century.