I think I chose the term wrong I would say earlier than in the event of a block reorganization, which the desired effect, the transactions that was confirmed are no longer what is still a little annoying for legitimate transactions without being dramatic obviously.
Discussion
That situation is always possible even without #Ordislow. Participants of the Bitcoin system should know the concept of “confirmation” and evaluate how many confirmations they consider safer.
For instant payments; the choice to use would be lightning.
Unfortunately, people still accept zero-conf transactions 😬