I criticized this somewhere else. Larians writers tend to go over the top. They need to learn a bit restraint.
The point they tend to miss is that you necessarily need common, normal people to contrast your powerful characters and races with.
You need a human fisher's village to have Tieflings, Mind Flayers and Elves be something special. If you continuously throw powerful races at us, they become boring and dull.
True that, I see people complain there are 2 humans in the party and we need more extravagant races around. Is not that mindflayers enslave mostly humanoid races or something has changed lately...
You can take any movie or any games. Characters like Data, Seven of Nine, Trance Gemini can only shine, if there are 'normal' characters around.
Apart from that, 'weak' characters do in fact have a certain appeal. If everyone around you is a powerful Tiefling, Drow or Queen of Dragons, a human girl picking flowers in the woods suddenly becomes something special
