and the only person who was executed in the Doctors' Plot was the guy who fabricated the claims against the Jewish doctors.

This would have been after '53, right? Like, Stalin wasn't responsible for that shit (we have testimony he was against the conspiracy theory), but let's not act like he thwarted it either.

Were the deaths that precipitated it really just bad luck? I guess that would bolster the theory that it was promoted by the opposition bloc to successfully keep Stalin from having easy access to medical aid.

People who talk about politics under Stalin really neglect how complicated it is and how, to assert something is true, that has implications for many other situations and motivations like a logic circuit changing values down the line.