Well a short notice is better than no notice at all. Usually exchanges only notice their users once they've closed markets and withdrawals and at best require KYC to customers in order to recover their funds. I've been able to withdraw my funds without KYC or any endless procedure, so I wouldn't say it's the worst closing experience I underwent, unfortunately. They certainly could do better but if they thought they had nastily scammed their customers I don't think they would come back with the same brand name and the same social media accounts, and they would leave open their customer service. Anyway I'm not very optimistic about the success of their DEX though.
You were able to withdraw your money, but not everyone was lucky. You might have probably been one of the lucky few. If you get sometime, Just search through forums like reddit to get a clear picture of how many people lost their money
The best they could have done was to put accounts on withdraw mode only for some good time, like how localBitcoins or localcryptos did. That's how you gracefully shutdown a business.
Let me just show you a few examples
For anyone out of loop, HotBit is an exchange that closed down 17 days ago and has given its users one month grace period to withdraw their fund. Sounds like a "graceful" exit however, for their biggest asset USDT they've only enabled ERC20 withdraw and the withdraw fee is an astronomical 48 dollars which they claim it's affected by the network condition but last time I checked ERC20 transfer only costs around 1 dollar.
It's plain obvious they are attempting to steal money from users before finally going out of business. So far they've:
Shut down support;
Closed twitter replies;
Deleted HotBit reddit;
Disabled telegram comment.
All intended to silence users. If you search HotBit on twitter you will also find hundreds of claim that HotBit embezzled their coins/tokens.
Just look through this recent reviews... This is not something faked or made up
https://www.trustpilot.com/review/www.hotbit.io?sort=recency