Interesting video. I wonder though, can you really use these Bitmex data in live trading? The guy is showing us the Bitmex open interest indicator along with liquidation data but he is doing that in hindsight. What I've learned the hard way is that, when you look back in time, it is super easy to identify these entries and it all looks smooth and easy. However, it is very hard to repeat that in live trading and identify these entry points because you never know whether these massive liquidations will lead to reversal or to continuation of trend. So I would like to see something like that video only in live trading this time.
Catching the massive liquidations will help you to understand the market sentiment and you can use this information in live day trading. Also this toll can be useful if price comes near the major support or resistance level.