From my reading on pubmed, it appears that one of the main risk factors for the incomplete growth of bone to secure the new hip components is too much activity during the first two to three months of healing....micro-motions make the joining of bone to implant insufficient. Having read this entire thread, I did not feel surprised that you ended up needing a revision.
I agree with your doctor that you are not at fault. To me, it seems that the fault lies with the doctor who encouraged your laudable but probably misguided eagerness to get back to full activity as quickly as possible. Some doctors are cowboys, lol. Or he may not have fully understood just how active you were planning to be. And it may be that his other very active patients are generally younger than you are, and therefore have more rapid and complete bone healing following surgery. Surgeons, even the best, have their own foibles, prejudices, blind spots, and communication issues.
My excellent, top-rated surgeon warned me early on that the greatest risk to my recovery was overdoing. Your rate of return to activity was off the charts from other recovery stories I've heard, including some from young professional dancers, and that makes no sense to me, given that you are in your late 60s and, though very active and healthy, not a professional athlete.
I feel curious why you are in such a rush to return to full activity after this surgery. To me, allowing myself a full six weeks without any exercise aside from walking, and even there, only gentle walks, seemed well worth the benefit of knowing that I was giving my new hip its best chance of serving me well for my remaining decades. I realize we are all different, but there's a reason the "overdid it club" has that name and has so many members. It's a real thing.