From their phrasing I don't think the reward they're looking for is financial: more the emotional reward of knowing that someone else appreciated their ideas. I dunno how much less likely this is in the age of LLMs, though.
In that case, more LLMs scraping the net will read your blog than people, that's almost a guarantee. And they'll immortalize your ideas at least in some sense, well after your hosting platform ends up gating your content, or GitHub pages is down indefinitely, or you forget to renew your domain.