This seems dysfunctional and a API for institutional subversion. If you can subvert the machinery that creates judges, you can basically take over a democracy without having any way to fix that except for institutional repair and waiting out the working lifespan of judges (which can be 1.5 generations)
What do you mean "if you can"? It has already happened in several democratic countries.
This is exactly what happened in my country and several others.
That is correct. It's why the Republican party went so hard to prevent any non-Republican judges from joining the supreme court over the last 1.5 generations.