You’ve offered zero counter points to OPs claims though.
Every time I travel abroad, I transact in local currencies for transactions large and small all over the world using real-time currency exchange rates via the magic of the Visa/Mastercard network.
If that was the core thing the Euro was supposed to solve, the better solution today is just an EU wide digital payments standard.
The point still stands, a common currency without the ultimate unification part is just disadvantageous for most.
Every time I travel abroad, I transact in local currencies for transactions large and small all over the world using real-time currency exchange rates via the magic of the Visa/Mastercard network.
If that was the core thing the Euro was supposed to solve, the better solution today is just an EU wide digital payments standard.
The point still stands, a common currency without the ultimate unification part is just disadvantageous for most.