Sacred Haven of Debauchery

Of course. Although, it should be noted that with a normal AI, such a measure as removing points for blockading planets would be unnecessary, I believe. I personally exploited this in the sense that the AI couldn't split its fleet and lift the blockade, but instead threw its entire army at my two corvettes. Then the corvettes would fly to a safe distance, the enemy fleet would fly to pursue my main fleet, and I would bring the corvettes back... Well, you get the idea. If the enemy could simply separate its corvettes from the fleet (and, as I understand it, it can now), then it would no longer be possible to exploit this so brazenly, regardless of the points. Although, perhaps some loopholes still remain, I don't know.