Think about it. Gale doesn't even connect with you upon first meeting him. Something's different about his tadpole too. He obviously has one... right? He seems to indicate that he does at least, and there are incidences where he seems to share in your sufferings, especially if you take the evil path.
Shadowheart was specifically called out as a Beautiful Weapon by some mysterious voice. Like you, she is not called by the Absolute and drawn to Moonrise Towers, like other True Souls.
Astarion is a Vampire Spawn. That right there is special enough, but his tadpole is granting him special abilities like walking around in daylight.
Wyll is connected to Mizora, and the goblins were specifically told to take Mizora to Moonrise, so something's up with his and her tadpole, if she has one, too. It's special enough for them to be given special treatment. Again, none of these people are called by the Absolute to go to Moonrise to become mindless cultists of the Absolute. They are free to walk about and do their own things.
And Lae'zel. Hmmm. Not enough known about her. Either way, again, she's not mindlessly obeying the Absolute, like other True Souls. So it is likely that hers is just as special.
And then, yes, yours is like an alpha special tadpole. You can even mind control Ragzlin, controlling his interrogation of the Mind Flayer. Yes. I'd say your tadpole is quite special.
And as for all of you surviving the crash, I believe the Absolute spared them all because they ARE special. Like it was mentioned, the tadpole's powers glowed and saved you from crashing and dying on the beach. Shadowheart in Patch 5 is the same. You find her not far away lying on the beach. She likely also fell out before it landed.
And then, as if that isn't enough, Shadowheart is wielding some sort of Gith weapon that they delve into more in Patch 5. This weapon seems to help you suppress the Absolute's influence. So it must also have some sort of connection to why you are all so special.
So I'd say it is all rather believable that 6 individuals all with special tadpoles were saved BECAUSE some godlike smarty pants entities saved them because they WANT them to live and they WANT to use them for their own sick purposes.
