It was not my argument. I only find it interesting and it does hold a possible answer to the question of how the dragon priests originally came into existence. I will not defend it. It is a mere speculation.

You say the Graybeards are pacifists. Are you sure? This would mean that if you attack them they will not fight back. I have not tried and had no reason yet to do so.

The same way you have to fetch the meade for the Companion's.

I think Delphine is cool, but someone needs to teach her to forgive and forget.

I think so too. It should be that simple, but unfortunately, it's not.

I don't see her as a [censored] as some would say. I kind of like abrasive/militaristic chick characters in any story. I don't know if anyone here watches Star Trek. She kind of reminds me of Major Kira.

TEABAGGED! HELL YEAH!

Try the thing in my signature and hope you won't need them afterwards.

But you don't "choose" to side with the graybeards unless one considers not doing the main quest to be a choice in regard to what the OP is talking about. But even then it really isn't. If you don't do the MQ and talk to the Graybeards the only interaction you'll ever have with Delphine is at Dragon's Reach when you return the Dragonstone. With Esbern the only interaction you can have is to meander through the Ratway and have him not open the door. So really, you don't get to pick any side because there's not side to pick from.

Once the ultimatum is given to you be the "Blades" they should become non-essential NPCs, thereby giving the player the opportunity to wax two of the three most annoying people in the game.

I put the word Blades in quotation because two fanatic people isn't an organization, it's the beginnings of a drum circle.