While I agree that the religious aspect degrades both sides ability to respond rationally (although certainly not equally so), and I do appreciate that you condemn the rocket attacks up front without needing it dragged out of you, I disagree with your other assertions.
The point of the blockade is primarily to stop weapons into Gaza as they have been in the past, rather than to stop food supplies which are rerouted overland as with the case of this flotilla. This publicity stunt was meant to end the blockade, allowing that weapon transport to continue. Even if your international activists were not focused on that, the funders certainly had it in mind.
Also, I disagree with your statement that Israel is not interested in peace. It's made multiple offers with genuine concessions that were turned down, most notably the Camp David offer, which I thought was the best offer the Palestinians could expect and the most Israel could be expected to give.