Of course we can tolerate a Supreme Court comprised of grifters because we get to see their rulings, and we get to judge the output of their work regardless of who writes the rulings.
If they are grifters who are writing good rulings, great! Or if they are honest but write bad rulings, then it doesn't matter how honest they are, they are doing a disservice to the country.
All of this focus on personality instead of results is a dramatic distraction from the actual work of government in our democratic system.
It's pretty antisocial, pretty misguided.