That isnt correct, perhaps "poor" might be a problem depending on what dept Scotland would have after independence, but definetly not small.

Joining criteria are (https://ec.europa.eu/neighbourhood-enlargement/enlargement-p...):

* stable institutions guaranteeing democracy, the rule of law, human rights and respect for and protection of minorities;

* a functioning market economy and the capacity to cope with competition and market forces in the EU;

* the ability to take on and implement effectively the obligations of membership, including adherence to the aims of political, economic and monetary union.