I didn’t actually pay attention or take out time to read all you’ve written but I’m just making this writing from the topic and speaking from your topic, it’s no longer a topic that people shouldn’t hold their assets on centralized exchanges for several reasons except you’re willing to give out your personal details which can easily be used to track you, just incase the need be.

There are other very good noncustodial wallets we can use to hold our coins especially for long term sake and a ledger or hardware wallet is always advised for those that want to hold for long term sake.