But only 3 hearts for the whole thing, +2 hearts for previously unpublished recordings (probably true).

Justification:
A film made in the style of UFO or Atlantis material.

Lots of statements by random people, zero statements by professionals who know what they are talking about. If a person happens to be a nuclear engineer, for example, he answers a question from a completely different field. The USSR hasn't existed for over 30 years and you could easily ask doctors, firefighters or members of the Chernobyl Civil Defense. They are no longer bound by confidentiality!

ZERO (literally) documents to support the theses presented, ZERO lists of names of "liquidators" of whom reportedly 80% died within a year of the disaster.

Factually, it is one big bullshit, on par with the propaganda of the USSR, or... tabloids.

PS. Check facts https://www.iaea.org/newscenter/pressreleases/chernobyl-true-scale-accident