Copying my comment from another thread below. I have since realised that Reddit does have to be GDPR compliant so it must be applicable, but does it apply to all content?
Would this actually be a GDPR breach? I was thinking about the right to erasure/to be forgotten earlier in relation to a post I saw about how your posts aren't deleted on other federated instances, if you delete them on your home server. But I figured it wasn't applicable because it's not personal data and I'm thinking the same about this Reddit issue. Can anyone set me straight?