Stalin invented the term marxist leninist to decribe his views, and the term “Stalinism” was coined by his own politburo to describe his implementation of marxist leninist policies (Stalin didn’t like it)
Unless we’re calling Kaganovich or Khrushchev trots, and at that point you’ve rendered the term pointless.

At this point “Stalnism” is a derogatory term serving the same use “Tankie” or it’s just another word for ML. And either way it’s still a real term.