Did it create serious problems? No.
Which was almost entirely luck. This vulnerability could very easily have resulted in millions in losses.
Is it better the exchange that looks unbreachable or the one that has shown how solves that situation?
Neither. It's better to keep your coins under your own control by using your own wallet and DEXs, and not have to trust a third party at all.
Well, I didn't know that. Trust Wallet claims they are open-source wallet software. I don't know how to verify it. I should stop using Trust Wallet.
Have a read of my post here:
https://bitcointalk.org/index.php?topic=5415683.msg61049268#msg61049268