Where did you see wBTC at $20k? That would be a great arbitrage opportunity since you can still unwrap it (redeem/burn) for real BTC onchain. 
I guess he saw that information in WO because he is active there, and someone posted today that this token has been in a bit of a problem in the last 7 days. Honestly, I don't pay attention to any variations (forks) of BTC, not even to this wrapped version.