Why Did Castrati Singer Alessandro Moreschi's Career Go Straight Down The Shitter?

There are a couple more recordings of him singing on his Wikipedia page:

The singular of "castrati" is "castrato."

He missed more notes in that song than Erivo singing "Gravity"!

A stark warning to todays pampered alter boys that worse things can happen to you...

Moreschi.

As painful to listen to, as having your balls cut off. He was dreadful.

As an Italian American I found this tradition extremely odd and bizarre. From what I read, parents did this to their young sons before trying to get the church to accept them as an alter boy or whatever title they were given. Imagine if the Church said, no thanks.

I also don't get the rational that his voice sounds better than a woman's because it's high pitched but strong? Angelic? Not what I am hearing.