Yes, indeed. The artichoke people bent on taking over the human race might be likened to the Communists, and the protagonist trying to sound the alarm was played by an actor named McCarthy--Kevin McCarthy.
I don’t ever recall “Invasion” being seen as anything other than a parable about the COMMUNIST ERA. The loss of individuality against one’s will, the group mindset of those replaced, etc.
Only now are they rewriting Hollyweird’s own history to say it was really about McCarthy?