Tether market cap is 24bil, Bitcoin market cap is 714bil. Its just 3%.
I think that Tether isn't inflating BTC that much. The institutions that buy BTC like PayPal, Square, JPMorgan have much bigger effect on Bitcoin than Tether.
Basically the market cap of BTC is not relevant here, but rather the daily volume.
Well, it will be an interesting week for sure.