No, that not true. I am an EU citizen and live in the US. GDPR does not apply to me when I deal with US businesses! Likewise a non-EU citizen who lives and works in the EU is in fact covered by GDPR.
GDPR actually applies to companies which are doing business in the EU and storing personal data of anybody who resides in the EU.
GDPR actually applies to companies which are doing business in the EU and storing personal data of anybody who resides in the EU.