Or is he trying to combine his coins for when people start to massively withdraw from his scam exchange so he can charge his users massive fees
I just checked their current BTC withdraw fee and found it's 0.001BTC (about $16.9). I'm sure the fee was 0.0005BTC or lower few months ago. It's unlikely they perform consolidation with such high fees, so your speculation could be right.
Those fees are a massive ripoff if you consider how cheap you can send bitcoins and also how important it is for people to move the coins from the exchange as soon as possible. So far it seems tja there are more coins flowing into the wallets than out of them.
Making money while ripping other people by forcing them to pay a lot or wait for days.
156 blocks? That is the biggest number I have seen in this year! And it seems still the consolidation is in process cause incoming transactions doesn't seems to be decreased.