Yes, I am aware that US Supreme Court Justices are not bound by the canons, because it is PRESUMED that the honor of their high office means they set the example without the need to have it spelled out for them.
Do you really believe that Justice Thomas was unaware of his wife's radical obsession over the Big Lie?
Imagine a Justice whose spouse is a lobbyist for Exxon. Imagine an environmental dispute case involving oil drilling. Shouldn't the Justice recuse herself/himself from hearing the case?
Link: https://www.uscourts.gov/judges-judgeships/code-conduct-united-states-judges