In neither of these cases will the contents of your average first aid kit make that much difference.
That’s like saying, “if you’re having a heart attack, it won’t make much difference if the ambulance is a couple of minutes late.”
Or knowing that someone’s going to die anyway even if you perform CPR, so not bothering.
You may not be able to CURE someone with a basic first aid kit and/or basic first aid knowledge, but you can improve survivability, even if only a tiny bit, which in some cases can make all the difference.
As anyone who has done a first aid course will tell you, the creed is the Three P’s – Preserve Life, Prevent Deterioration and Promote Recovery.
Personally, I’d rather carry the basics (after all, how much does it weigh??) and know that I might be able to help if it comes to it than just not bother.
In a real situation, all this “MTFU” bull$h!t doesn’t wash. I’ve seen people become hypothermic, or start slipping in and out of consciousness through blood loss and it’s isn’t easy to deal with, but if you have basics at least you’re part way there.