I heard that the campaign participants are responsible with the losses /jk.
Maybe the hacker was an idiot. Moving stolen funds to centralized crypto exchanges seems like a dumb move. The Metawin team identifying more than 115 addresses associated with the hacker also means that this guy(or several guys) was/were not that smart.
What if Metawin was hacked by a smart hacker(or a team of hackers) and he/they managed to cover his/their traces? Maybe the Metawin team was lucky this time.
I haven't heard about the crypto exchange HitBTC in the last couple of years. I remember that I had an account there. Those were the good old days.

There were many articles I've read the hackers send the money to centralized exchanges, I had no idea why they didn't learn from the others, but that's a good thing.
But, it looks weird if the hackers sent the coins to HitBTC, it was an old exchange and had many scam accusations. I think the hackers did that with an intention.