Yes I too have seen the 2022 Perun video where an Australian Youtuber gives a lesson on Russian linguisics, but I'm not certain he's right.

English also has more than one words for lies - lies, falsehoods, fibs, bs, prevarication.

Yeah sometimes we know stuff is a load of crap at work, but we gotta humour the process. Maybe it's 10x as bad in Russia. But I've seen little independent evidence those words Perun used mean completely different things, I think he's just accidently exhaggerating a possible bit of nuance.