About the VID8/HIB8, as the "discoverer" I've always called it "pseudo morse" because it behaves indeed as morse code does, it was "decripted" by two morse experts here in the forum, but as it seems to have no meaning at all, we could assume it could be just a background loop, that repeats each ~5 seconds, and perhaps it's a kind of noise and that's all. We don't know if it is morse or another kind of signal we was not able to decrypt.
My opinion is that it's too short a sequence to be sure that it's significant, given that it's not obviously meaningful. If it spelt out "help" or something then I'd be pretty convinced you'd found something important, but with it being "VID8" or "HIB8" I'm inclined to think it's a case of finding something that just happens to seem like a signal. So basically I agree with you.
- - - Updated - - -
But conversion from morse code isn't decryption, that's just translation. There is always the possibility that the message was encoded before it was translated into morse.
https://en.wikipedia.org/wiki/History_of_cryptography
WWII encryption methods and earlier can be easily cracked by hand. Which of these methods have been tried?
It's pretty well impossible to decrypt a message that short unless you have a very good idea of what it is meant to be and/or how it was encrypted. Otherwise it's quite easy to come up with any number of reasonable sounding solutions.