Well thats one take on it I suppose!
I don't see how you can accuse Wales of having too many people afraid to do anything when we voted to leave the EU which quite clearly was quite a radical thing to do - and will result in a lot more powers for the senedd too as in devolved areas, Wales will gain what Brussels had. Farming for example.
As one of Western Europe's poorer areas we would get some EU invetsmebt but it would absolutely pale into insignificance compared to UK finding, which people never seem to mention btw.
Wales has public expenditure of 11,000 per head. England is £9,600. The sad reality is we spend far more than we earn, so leaving the UK and joining the EU absolutely would not deliver what you say and it most definitely is not a 'no brainer'
https://www.gov.uk/government/statis...-november-2020