Sharon Yquado left Amazon in 2019. If she was "replaced" already in 2018 then she wasn't that important to the project. She was just a lower level running things while the CEO made the big calls. It still points out that your original claim is bogus.
3 directors being female with only 2 males being replaced is not the show being run by an all female team. There are still male producers and writers.They literally told us the show ill be run by an all female team, brought over from wheel of time and the witcher. Stop using other showrunner leaving to support your argument, house of the dragon was good, rings of power wasn't, he could have left by any reasons but it was not by the show performance.
I'm using the a showrunner leaving HotD because you claim a showrunner being replaced or "reduction in role" is a sign of a failure. So then a show runner leaving the show has to be a sign of failure as well, right? It shows how you lie and have no consistency to your logic. You arbitrary apply it only based on your personal taste on a show. The same things happening to House of the Dragon isn't a sign of failure because you like the show. The same things happening to Rings of power is a sign of failure because you hate the show.