Yeah I was kind of convinced that PCS was a necessity for any long term TBI.

I completely agree with you that getting hung up on diagnostics doesn't get you far, while at the same time, symptoms can likely also mislead since a lot of factors can be in play. For instance, as some others have mentioned, the symptoms can be generated from anxiety or the inner ear crystals (as probably is in my case) gets shaken up resulting in some of them dislodging. Though I don't hope that shaking of the inner ear can cause any permanent hearing loss without symptoms such as tinnitus.