If all you care about is financial, expected value of someone reading your blog and asking to collaborate is MUCH lower than odds of being part of some settlement in the future with these AI companies ingesting your data for training purposes.
I don’t think that’s fair. Some bloggers may hope for financial reward, but many just want recognition for their creativity, to attract a readership, or build a community around their work. Those are meaningful ends, apart from financial reward. What’s not meaningful is to perform free labor to produce the raw materials that a mega corp then goes on to monetize without any recognition.
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.