You have the opportunity during the first two hours of them being submitted, unless there's a response to them, if I remember correctly.
Being exposing is a bit of a benefit for HN, in that it's a very good way to serve as a snapshot of culture at any given time. People can't just whitewash their histories or wrong actions on HN.
From a legal standpoint, I don't think it makes a lot of difference. Especially since unless you are specifically trying to make a throwaway, figuring out who you are is trivial, especially if you use a chunk of your RL name in your username. Or in my case, if your username is commonly identifiable as you and tied to your RL name on other sites.
I don't think anything about Right To Be Forgotten leaves it to the individual's responsibility to mask their identity.
From a legal standpoint, HN doesn't sell products, use user data for profit, or operate in the EU. Both it and YC have made it rather clear they don't want to touch the EU.
Complying with GDPR would basically be an act of goodwill more than anything, and even that's debatable.
I think you mean from an enforceability standpoint. From a legal standpoint, GDPR applies to all EU ‘data subjects’, and HN would be in breach of it if they don’t provide EU ‘data subjects’ with their rights under the GDPR.
Being exposing is a bit of a benefit for HN, in that it's a very good way to serve as a snapshot of culture at any given time. People can't just whitewash their histories or wrong actions on HN.