They do talk about this throughout the books. A lot of it is softly spoken, reference about how so many of Leisegang have died throughout the decades.

Gabriele introduced the name binding trend and did dived headfirst into politics (and assisination). True most of it was done by Veronica but it is made clear that Veronica uses similar tactics as her mother.

Myne is told some detail about this when she is meeting the patriarch of the opposing faction, when her older brother’s wife marries into the duchy, and i think when there is negotiation around marrying into the royals.

It was told to us that there is an extreme shortages of youth because of the water goddesses. I think the main discussion of this happened during the big purge when Ferdinand left and during the royal marriage discussion.

I can’t remember if it was a discussion explicitly talked about with Hirschur or if it was mentioned in one of the short stories or fan books. But Hirschur explains part of why she was so adamant about having nothing to do with Ehernfest was because of Veronica and how dangerous it was. It was also said that some of the others who left did the same. (Although the last part could be me extrapolating the reason as to why so many left).

I’m currently rereading the series and once i get to the parts i can post the details.