> And if you look at Eurostat stats Eurozone countries have consistently lower GDP growth and higher unemployment than countries not in Eurozone.
Sorry but "if you look at Eurostat stats Eurozone countries" is not going to cut it as a source when you make such bold claims.
Playing around with World Bank data, you can see that out of a selection of non-Eurozone countries (Czechia, Serbia, Albania, Bulgaria, Romania), and Eurozone countries (Estonia, Slovakia, Lithuania, Slovenia, Latvia), and checking their PPP GDP per capita growth, it's a complete mixed bag. The only cluster that emerges is non-EU, non-Eurozone countries doing significantly worse than EU countries:
https://data.worldbank.org/indicator/NY.GDP.PCAP.PP.CD?end=2...
Very similar story about reported unemployment rates with the same selection:
https://data.worldbank.org/indicator/SL.UEM.TOTL.NE.ZS?end=2...