How is giving any EU state the ability to be a certificate authority in your browser for issing a certificate for any site, without them needing to follow the rules the browser vendors have for what makes an authority trustworthy, with no option to disable them or add additional checks to their validity, “protecting their citizens from (American) corporate abuse”?

From the Mozilla post:

Any EU member state has the ability to designate cryptographic keys for distribution in web browsers and browsers are forbidden from revoking trust in these keys without government permission.

[…]

There is no independent check or balance on the decisions made by member states with respect to the keys they authorize and the use they put them to.

[…]

The text goes on to ban browsers from applying security checks to these EU keys and certificates except those pre-approved by the EU’s IT standards body - ETSI.