The same banks that caused 2008 and got bailed out can unanimously control transactions. The same banks that cause endless global conflict, that fix elections, that manipulate politicians, that rig the fabric of capitalism and democracy all around the world, that enable socialism for the rich and rugged individualism for the poor…those same banks are the ones you trust to “reverse transactions without permission”.
This is the problem crypto fixes. It removes the banks power. It has reversibility; it just needs to be integrated with the/a identity mechanism and legal system. The main purpose is to cut out the bankers.
It works the same way. You can introduce voluntary trusted market intermediaries and utilize things like escrow. Big enough markets can provide liquidity such that all transactions appear realtime, but sellers can provide a deposit to the market to cover problems.
That is one method among a gazillion.
We do not need banks. All bank functions need to be mathematically automated with no trusted parties.
This is what happens with fiat money anyways, it is just so intimately mixed by now (credit cards, ACH, etc.) that you figure it's the only kind of transaction that exist or should exist.
Crypto is providing an alternative to this point of view, if you don't think you need it, don't use it, pretty straightforward... and if you want to stop it because you want people to think like you, try to stop it, let's have fun.
also perhaps consider taking a less passive aggressive tone. throwaway accounts are not an excuse to be rude
If stating the factual matter of what you can do with or against crypto is "rude" to you, feel free to not answer next time, as your whining/concern trolling won't change much to these facts... especially when they don't relate to what was debated: reversability of transactions.