Soon to be implanted at 22 years old. What do 50 years of revisions actually look like?

Like the title says, I’m 22. I’ve had ED for four years, more than two of them on injections, and I’ve never been able to find a dose that works reliably. No atrophy or fibrosis. I’m scheduled with Dr. Eid next month for a Titan.
I know the 10 to 15 year survival numbers. Over a normal lifespan that puts me at five devices minimum, and I haven’t been able to find out whether a lifetime of revisions is actually sustainable.

Three questions for long-timers and anyone implanted young:
1. How many devices, what intervals, and did the later ones last as long as the first?
2. Did each revision get more complicated? More scar tissue, length lost each time?
3. Is there an end to this?

My worry isn’t the device failing, it’s the corpora eventually being too scarred to accept another one, or erosion preventing replacement. Has anyone hit that wall, or come close? How many devices in were you?
I’m making this decision with the longevity risk in mind. I’d rather live my life while I can.