I'm not a lawyer, but HN is not established (AFAIK) in the EU, and while it has EU users, it likely does not meet the threshold of actively offering goods or services to EU residents. Being accessible from the EU in itself isn't sufficient to trigger the GDPR.
I'm not a lawyer either, but have been going through the GDPR process at my job. It doesn't matter if you operate or are established in the EU. If you have EU visitors/users they gain the protections of the GDPR and you have to comply. GDPR affects any org/site that collects personal or sensitive data. Amongst many others IP address and email address are considered PII under GDPR. We use IP address for some high leve…
I understand it applying to companies that are doing business in Europe but beyond that...?