[gonvaled]

> treason and sedition

What is this? Treason to what? Something they do not believe in?

Sedition? By definition, but not necessarily with the negative connotation of your word choice.

Regional vs national government? This is exactly what Catalans are trying to sort out.

Taxpayer's money? This is one of the issues that Catalans are complaining about (rightly or wrongly)

Your whole arguments boils down to: "things are as they are, and trying to change them is bad because that would mean things do not stay as they are".