You read it wrong. They do not believe that unregulated exchanges are "safest". That's why they prefer Bitcoin futures in the first place. Try to understand what you are reading please.
This is the statement that's worrying.
However, the company requires Hong Kong customers who want to trade Bitcoin futures. Thus, to have a minimum deposit of US$25,000 in the account and experience in futures trading.
Once the regulators start to enforce too much regulations on regular Bitcoin exchanges to put them out of existence, we are out!
It might be a good time to campaign for trading in decentralized exchanges like BISQ,
https://bisq.network/.