This part is true. But the motivation is also somewhat relatable. Power is one of those concepts that universally cover all other things that we might covet, and being willing to break rules to attain something you covet is also somewhat relatable.
Sure, which is why I think it is the "safe" choice, it's travelling a well travelled road with low risk, high gain (which btw I expect BG3 to take as well when it comes to the main villain, expect the next powergrab for divinity). Though personally I cannot say that I find the motivation of power at any cost relatable, nor interesting to explore.
You can also see how this approach to safe writing is reflected in the protagonist. For all the story implies losing your soul is terrible, in the game is after the initial cutscenes there aren't many consequence. You can take as long as you want hunting Irenicus, nothing happens. Even the slayer choice comes at the low cost of a reputation drop... which you can offset by donating to temples. What is the cost of one's soul, indeed.
There have been some datamined spoilers that at least in BG3 using the tadpole too much might result in passing the point of no return, but who knows.
