Oh I'm definitely used to coil whine, I had a pre- unibody macbook pro and it ended up sounding like a radiator after a few years.Could be power/electricity related.
My PS5 is like my laptop
Dead silent the majority of the time with the occasional coil whine noise
Nah it seems like most units will eventually end up with coil whine because Sony didn't add sound dampening measures to it. Which kinda sucks