That's correct, but it's not the amount only, it's the vulnerability of the site against hacking.
They are a billion dollars exchange, and their trading volume (daily) is over $1 billion, so they can easily recover the hack amount, but if this happens again, I doubt if they can regain the confidence of the people again, this will lead to a their downfall as the next hack might result to loss of bigger funds.
It's important to note that Binance wasn't actually
hacked. They are still using the same hot wallet today, which they've said is limited to about 2% of customer funds. Some users -- including some with very high account value -- had their accounts compromised. Binance didn't have proper internal checks in place and authorized very large withdrawal requests from these accounts through its automated system.
An attack like this can't drain anything beyond what's in the hot wallet. We can also take some comfort in the fact that Binance's system wasn't actually compromised. Fixing this problem is a matter of implementing more strict controls on the withdrawal system, not identifying unknown security holes and rebuilding the system.