Yes indeed, I 100% agree with that. Vladimir Putin wouldn’t even qualify under the “14 year residence in the United States” requirement of Article 2, Section 1. It would be constitutionally illegal for him to “act as president” in the United States.
He is ineligible.
What should happen if the voters elected him? Who is supposed to handle violations of the 2nd Article and 20th Amendment to the US Constitution? In this case a violation BY THE VOTERS.