Different aims, different techniques. The flooding of the country with illegals is an example of the Stalinist technique you cite. Subverting an organization is a bit different in my view. Let’s just say they’re both Soviet techniques.
We need to focus on the destructive effect of refusal to defend essential values, whether the result of ideological fanaticism, or a gutless form of pseudo-pragmatism, that leaves us impotent in the face of disaster.
The RNC represent a combination of the corrupt, with unstated real agenda, and pseudo-pragmatists (idiots or dysrons) who think they are clever, but are anything but.
Doesn’t really matter. The “infiltration” of the Republican party happened many decades ago. The Reagan era was largely an aberration and was mostly undone by Bush the Senior (one of the long ago infiltrators, rhymes with traitor).