So, where I expect this is stemming from is the idea that Bitcoin's USD denominated price is highly reliant on liquidity coming from Tether being minted and used to buy Bitcoin.

If Tether depegged from the dollar, it would probably be due to some kind of crisis with what they are using to back Tether, and people would no longer accept it at a 1:1 ratio. People would be fleeing out of tether and back to the "safety" of USD, and therefore we would no longer have a bunch of new Tether being minted and pumped into Bitcoin, so its price would also fall.

Thing is, Bitcoin doesn't need Tether. Its dollar denominated price is not reliant on Tether to be sustained. At worst we would see a short-term crash. Bitcoin's price cycles are far more affected by its internal supply issuance schedule and overall USD liquidity.

Just like the "China owns more than 50% of the hashrate!" FUD, I look forward to when we can finally put this rather weak bit of FUD to rest, as well.