Fascinating video -- very 1970s.
It's not fake; it's too well done for that. The first video espouses the idea of general physical preparation. You see this emphasized a lot in Soviet training doctrine: namely, the idea that athletes should have a general base of conditioning and skills, and that this base should be maintained. Not surprisingly, the Poles, too, adopted this approach.
One thing that comes across from this video is how these Polish weightlifters are pretty decent all around athletes: they move quickly, efficiently, and with grace.
Poland had (and has) a decent weightlifting tradition. But it may be worth remembering that Bulgaria, a country even smaller still, was about to amaze the world with its weightlifters, and the hallmark of the Bulgarian approach was specialization.