I still stand on ‘no exchange is perfect’ but having a backup to spread your activities on would definitely save some stress when the unexpected happens which is why OKX is my third one. Just like having a diversified portfolio and having multiple investments basket, having different exchanges is a good decision in my opinion.
I agree with you that just as you diversify your assets it's required as well to do same for the exchange used, cause of unforseen circumstances like what happened before, so spreading out on ones exchange is an advantage in making sure you're not stuck to one exchanges and have a loss.