There is  no perfect security system in this world so the intruders will always looking for ways and gaps to penetrate the security system while on the other hand trying to prevent this from happening. That's why binance has reserved amount of funds for this kind of events. So I think as long as the exchange responsible for this occurance it's just fine.
I truly agree this is a critical point that developers and community should find the solution. And still, decentralized exchange that support multiple blockchain is the better option until the main problem resolved.