I've read that github issue and it looks like something that might be taken into account. I wasn't even aware that posts are hosted in the blockchain. It makes much more sense to host a reference - with a little bit of metadata, like timestamp and revision numbers for different edits - and the actual content to be hosted somewhere else, maybe wrapped in a versioning system like git. I don't even know if this is possible, I'm just throwing out some ideas on the table. And that's for the technical part.

The business modeling part might take into account different levels of value for posts, based on a combination of factors. Time spent reading it (I know it can be done) + date of publication + interactions (voting / commenting / sharing). This system can be tweaked in such a way that older posts can still get some cash, based on the actual attention they get, even if they're written 5 years ago.