>>538058951
He doesn't betray you unless you betray him first. This is a simple fact, and is a far cry from the rhetoric people were saying, which is acting like he betrays you as part of the plot or that it was inevitable. Omitting such an important detail like the player has to start the betrayal sequence in order for it to happen at all misrepresents the game. That's all. Whether or not he is trustworthy in the general sense is a different topic. And obviously he is not.

And for the record, he is lenient about several things. You can waltz into the creche showing off the artifact and handing it to everyone who asks, you can deny tadpole slurping every single time he asks, you can affirm your desire for total ghaik extermination at several points in the game including to him, and you can call him a squid freak in every conversation and he just puts up with it because you need each other. He could have turned you into a squid by removing his protection at any second, and then tumbled the artifact into the next adventurer's hands at any point. So he's more patient/flexible than people give him credit for.

>>538059109
Him joining the brain instead of just peacing out completely and going to Neverwinter or something was pretty stupid, but his logic is that survival even as a slave is preferable to being killed by the resurging githyanki if your plan succeeds.

Which is funny, because earlier he says taking this chance at freedom is worth it even if failure means death because life as a slave is no life at all. So it seems he talks big and gives good speeches but is actually quite afraid of dying when it comes down to it.
Especially in this case where he can just hide in another region...

>>538059894
It's something that nobody would do unless they looked at the achievement. That achievement being among the most rare despite being easy just proves that most people are not achievement hunters and don't even check what they are.