I think the blog post can be summed up by 'pirates are always going to pirate and use any excuse to'.
I think the amount of people who watch fansubs (or let's be honest, CR rips done by a certain group) will always outweigh those of us who pay our subscriptions for legal access, but all we can really do is continue to teach new fans getting into anime about places like Crunchyroll and hope they decide to do the right thing.
To add to this: I very rarely watch fansubs and it usually is just in the case of something not having a legal stream and if that happens then I try to put money back into the series in some other way. For example, when it first aired Noragami didn't have a legal stream at all (or it was late casted to Animax, don't remember which) but since watching it I've poured money into it by buying all the currently released 18 volumes of manga. It might not be going back directly to BONES and the anime side, but at least it's going back to creators somehow. Noragami probably isn't the best example given I liked it enough to buy all the manga thinking about it...
Regardless though, I'm always happy to buy a couple of volumes of manga or maybe some merchandise to support a show that wasn't streamed (or sometimes even released later) legally if I took the time to watch it via fansubs. It's slightly warped logic in so far as it's probably not helping the anime, but it makes me feel better knowing my passion (and money) for it is going somewhere. I mean, failing that I'm subscribed to WSJ and J-Novels, so if the titles ever overlap anime-wise then that just helps all the more. ^^;