But it's not exclusive to her. All of dialogues are silly. If you had Horizon with the script writers of God of War (2018) even with the boring game mechanics, it would probably be a masterpiece.
The Mary Sue trope has infected Hollywood and now the gaming industry. Every woman needs to be perfect; flawless. Every man serves only one purpose: make the Mary Sue appear even more perfect. At this stage I'm impressed when media doesn't include a Mary Sue. I'm really disappointed to see this game is similarly compromised, as I was looking forward to playing it one day.
[EDIT] As for those complaining about her personality, the sequel actually kinda explores that in some... interesting ways.
That particular twist might seem contrived, especially by today's standards, but Luke had a story arc. He didn't appear in the world as a perfect being. He made many mistakes and earned his redemption and victory.
Similarly, Harry Potter had a story arc. He began completely unskilled and naive. He made many mistakes on his journey to competence.
Both of these examples are the antithesis of the Mary Sue trope. It sounds like you're confirming that Aloy was born a Mary Sue, and didn't have to earn the mantle like any good story arc demands.
As the protagonist of the story she’s privy to information and intelligence far beyond the knowledge of much of the rest of the cast. She’s treated as a literal outsider for much of the early story and is often held back from completing vital goals by archaic and arbitrary belief systems throughout both games.
The character is arguably too nice and accommodating to those blocking progress, given the situation, yet your complaint is fairly common.
You can be snarky by the way. She is not snarky. She's just superior to the "dumb plebs" and whiny at the same time.
I can't currently think of stupid annoying completely superior male protagonists, but they are quite common in certain types of anime. If the comments on streaming platforms are any indication on their popularity, for the most part, unless the story is extreme parody, they are usually universally disliked.
Edward Kenway (Assassins Creed: Black Flag) is a similar character that comes to mind, though I concede it is difficult to think of many open world video-game characters that deviate from blank-slate people pleasers.
PS: I tried shooting the dude, to see if that works. He’s bulletproof because railroads and scripted events
Death Stranding (Hideo Kojima's latest game) also uses Decima and is a nice showcase as well, runs like a dream on even the Steam Deck.
The first time you go out of the city, the world just opens up to you and the soundtrack just gets more and more calming and you're left with Sam, the cargo and the target. It's just... wonderful.
Of course, the same exact thing happened this morning in the first few minutes of Tears of the Kingdom. Nintendo seems to get this right way more often than everyone else.