Can confirm.

I've had like 2/10 tinnitus for all my life, can't remember the last time I heard "silence".

Got a C5/C6 hernia a year ago, about 6 months after that MASSIVE tinnitus in my right ear and clear increase in the left. Like "can't hear shit" levels of noise.

Eventually I figured out that doing a basic shoulder workout + going on a walk eased it off in a few hours. A month ago, due to a doctor's suggestion, I discovered that taking muscle relaxants just before going to sleep a bit, I've woken up with maybe 3-4/10 tinnitus a few times.

Definitely a neck thing.