You are right. Unfortunately, there are grey areas in prostate cancer treatment, as in any branch if science. New discoveries are made. Sometimes they create their own grey areas. According to practitioners who treat thousands of men every year for decades, triple does work. It works better than the studies indicate. Those necessary have limited time frame and parameters. But at the same time this form of treatment may not have been long enough, and widespread enough to provide the data for positive conclusion. For example, UK only approve of the use of triplet in 2022 or there abouts.
So when you press a doctor, he or she would just have to go back to what they learned at Med School.
On the other hand, it is the experience of practicing doctors that those who reach the PSA level < 0.1 is cured or in long term remission. But their opinion seems to be based on RT and Homo only.
What if the PSA falls below 0.1, or even 0.003 undetectable on triplet, without radiation or surgery? It seems even the doctors of the big clinics in USA has not yet come up with an answer. The presumption is they must be the same as the others. Who knows?
In some ways, that is where forum like this is most helpful. Apart from mutual encouragement, we have real examples of long term recovery, or perhaps even cure.
Sorry to get rather long winded, again! I am just another layman trying to make some sense of the whole thing.