This was from my 2001 530i, it had a failed CCV and the dipstick tube (original non-updated version) was clogged
Well,
When a PCV system fails, usually it is from a clog ---> increased crankcase pressure ---> oil leak past the seal etc.
The video you posted above is from a different mode of failure: too much suction. Funny enough, this is exactly what you want in an M54 engine to reduce oil consumption.
The "BavarianE39 mod" is exactly that: creating a lot of suction to reduce oil loss from leaky piston rings.