I don’t know that you’re wrong, because those MD/PhD programs are exceptionally demanding (but are a good way to avoid med school debt for some). It’s more that even for pure MD’s, research is a very, very different career path than practicing physician. I think researchers still have to go through residency, but after that they’re mostly designing and arranging clinical trials, writing grants, interacting with related university departments, etc.

So, you know, research stuff rather than patient stuff.