(a) makes little sense to me. All the pristine data, i.e. Reddit up to late 2022, is already packaged up, mirrored, and available to download. Everything afterwards - and especially everything from the last two months onward - is increasingly becoming adulterated with LLM-generated content, which so far is proving poisonous to LLMs when fed to them in training. In other words: the widespread access to LLMs is rapidly destroying most of the ML training value Reddit data could offer.