I'm actually pretty sure it does. We went from "0 shares available to short" to hundreds of thousands on Tuesday. And then look at the price action on Wednesday and Thursday.... and you can also follow the whittling away at the available shares to short at IB.
There were clearly bears sitting on the sidelines waiting for shares to become *available* to short, and they shorted them when they became available. All at once. The real question is: who suddenly dumped hundreds of thousands of shares into the lending market?
Here is how shares available to short looked at Fidelity today. My advise for anybody saying that shorting had nothing to do with SP movement is to just compare this table with the TSLA chart...