Your problem is failing to understand the context that it's an actual war for her, you severely underestimate the stake of being in battlefield and overestimate your own ability by thinking "She's dumb, why she cannot think as smart as me" when you're just typing safely at home and having a ton of time to think.
This.
People are dumb for assuming people will always react instantaneously with the best course of action, in unexpected situations like this. Let alone will always act rationally(Peter Quill's foible against Thanos is a masterful example of this).
Like I don't know shit myself. I have never been in a war or anything close to that.
But I have been robbed at gunpoint 1.5 times(.5=probable but not certain), and robbed/assaulted another.
First was when I was working at a gas station just cleaning the bathroom. One dude comes by with his hand in his Hoodie either with a gun or trying to appear like he had a gun, telling me not to move, watching me while his buddy robbed my manager at gunpoint.
Second was a pizza delivery, where I was having a nice conversation with the customer and suddenly they had me kneel with a gun against my spine while they took everything on me. I learned the importance of never letting someone get beside or behind me at night.
Third was similar, only they straight up slugged me in the face after I couldn't take a $100 dollar bill for their order, running off with the pizza. Leaving me with a mild concussion and a jaw that didn't get its feeling back for at least a month.(also a very brief momentary blackout)
The human brain doesn't always function correctly when adrenaline gets pumping. The first robbery I was calm and just told the guy to chill, while I stayed non-threatening.
The second my lizard/shocked brain had me call my manager first instead of the cops. It was dumb as hell. The me before and after would agree. But I was shaken, shocked, and not thinking straight.
The third I learned my lesson and immediately called the cops, despite being shaken.
Like people can't always act optimally in a damn video game they play extensively for hundreds and thousands of hours from the comfort of their homes.
Yet they can criticize a civilian who essentially was drafted to the front lines with minimal training, is in a shitty situation(weather/environment/health/sleep deprived), on top of nerves and adrenaline surging, to somehow pull some superhero move like removing a helmet, catching fast moving grenade with it and then bury it in mud or something. All in the first time she has ever been in this scenario.
Bullshit.
It's not even like touris action in the heat of the moment was bad. She literally deflected the trajectory of the grenade away from the squad, and heroically is trying to use a shield and herself to shield the shrapnel from her teammates.
It's fiction, I get it. I'm getting a bit more heated than I should over mere fiction.
But damn is it annoying having sheltered idiots make dumb comments critiquing someone for not doing the absolute most perfect action.
It's like a politician telling cops to just shoot someone in the arm or the leg. Or shoot the gun out of the criminals hand or something.
I digress. Minor spoiler, Touri
will suffer the consequences and learn from this situation. Very painfully.
Edit: I should reclarify. I don't have a huge problem with people naively critiquing things like that. My problem is when people are so narrow minded that they start treating a person/character like an idiot for not doing the "obvious" thing like their arm chair sitting ass can think of under no pressure and no negative circumstances.
When they are completely ignorant or lazy to even consider the real circumstances and state of mind the character or person are in, even as a consideration.