No one has ever made the argument that Bitcoin is safe inside the confines of centralized exchanges. But you're right, I still to this day have a lot of my value stored there like a dumb dumb.
Still planning on buying the Trezor and Nano hardware wallets whenever I happen to get around to it. I've come to realize that trusting a single device is a foolish move.
Not sure how safu BTC is on hardware wallets since you've got to move it through the exchange to get value from it. The device may be safe. Your keys may be your own. If you can't spend it, it's not safu.