Since you're being a good boy and tried to use that limited brain of yours, I will explain every single point you have written.
So, if a transaction did not get confirmed, it means that the receiver in the blockchain did not get the Bitcoin, so then, there is no question of your "so called" reversibility of a Bitcoin transaction, here.
A transaction having 0 confirmations and the receiver not getting the BTC are two different things. Some exchanges wait for three or more confirmations before showing the amount in a receiver's account, it does not mean that you don't have the amount in your account. One confirmation is enough.
Next, that Replace By Fee : -
""" First, the whole point of RBF is to get a transaction included in a block and confirmed. If you change the recipient on the transaction, then the original receiver will know about it. Once the transaction is confirmed, they can see they are no longer the recipient on that transaction.
I never said that the receiver won't know about the change, I merely said that I saved myself because the scammer was a noob who deleted the chat before a confirmation.
The argument that RBF makes double spending possible assumes that the recipient will send you your products without any confirmation. But if that were the case, you wouldn’t need replace by fee in the first place. And merchants can just require at least one confirmation before releasing product """ (as also explained at buybitcoinworldwide dot com).
Not relevant. Most payment gateways require minimum three confirmations before marking the transaction as complete.
Hence, what is explained by you through the Replace By Fee step, DOES NOT mean in any way at all whatsoever (as YOU mentioned) that Bitcoin transactions are reversible. What is explained by you, is a process to SCAM someone who is careless to release delivery of a product or service without checking for atleast one confirmation on the (Bitcoin) blockchain.
Depends on how you see it. I saved myself from a scammer using this trick, but you're more than welcome to take it however you want.
Still you have been UNABLE to prove or even explain how Bitcoin payments are reversible. What you explained does NOT mean that Bitcoin payments are reversible.
You want to prove it ? We will do a test US$1 Bitcoin transaction. I will provide you the US$1 plus the network fees, then you send US$1 to me by Bitcoin and then (as YOU have claimed), you reverse the transaction. If you can do it, I will give you US$1 million. Are you ready for the challenge ?
Bitcoin transactions are irreversible. Period.
Check the replies again, I might have missed to cover everything in my first reply but I did say that transactions cannot be reversed after a single confirmation
here. Let's do one thing, you send me $10K to send to you again and I will cancel the transaction before it gets a single confirmation and still show you the transaction. You're just replying because you're butthurt about something you don't understand.
I never claimed the transactions to be reversible, I said that I saved myself from a scammer because he was dumb like you.
I am off, I won't reply to any of your future messages. Adios!
It's impossible to control 51% of the BTC now, but never say never. 
