Durability is an issue, it's a big annoyance. I often find myself reloading to restore my weapons especially after knocking one of those heavy plates or boulders out of the way with stasis for a crappy reward. Reload. Fight a camp, reward sucks, reload, go around. After 70 hours I find myself ignoring stuff more often than not, so yes it's a problem as it's affecting my enjoyment of the game.

I don't fight Stone Talus' anymore, just a waste of resources. Hinox, not worth it. Lynel, why bother. Annoying high level bow lizard, just run away. Not worth breaking a weapon on.

I've got 106 Korok seeds, still haven't found a way to use them. Maybe after increasing the inventory I can play around a bit more again instead of only having one or no backup weapon for each type.

Well, that seems more like an assumption. Then again, I have not played the game so i don't know if you can see the weapon's current durability when he's picking them from the menu or his "level" compared to the enemies' "level." Even if they are low level weapons, he seems to be fighting fairly common enemies. He didn't pick up any weapons though, but i think it was to show how annoying the menu scrolling during a skirmish with multiple enemies can be.

Even with all of that, at the very least in concept (and in the execution shown in the video), it is ridiculous to have to go through 4 - 6 weapon in one fight. One thing is cycling between weapons dependent on the situation/enemy, another thing is having them break after a few swings and having to switch to a new weapon.

I do have to try it myself to see if the whole system is annoying and aggravating as it sounds in practice so I've refrained from going too hard on it. 

You're right. I misread and misunderstood what was going on. I apologize for letting this get out of hand.

I would say that weapon fragility isn't an issue, it's a mechanic. I adapted to the system early on and it has never been a problem that I've run into an enemy without a decent weapon to use. Survival is an honest element to this game and those who put thought into how they use their resources will never lack.

If weapons didn't break my inventory would be static and there would be no reward in finding a new weapon. Also, several of the game's weapons can be reforged if they are broken - the others become more readily available if you know where to look (mark your map).

If you want to know, go outside the back entrance to Kakariko village (I think one of the entrances), you'll see a giant pretty hard to miss Korok.  Talk to him, he'll give you a sidequest that is to beat a few nearby enemies and retrieve his maracas.  Do this, and you'll be able to use Korok seeds to expand your inventory.  It's pretty much on the path of one of the story missions, so I'm surprised you missed it.

I can give you an idea.

The first weapon you can acquire (I believe) is a tree branch that will break in four hits.

The boko club that you could get shortly after breaks in 10 hits.

The serpentine spear which you can get within the first couple of hours will break in 34 hits.

The Royal Broadsword (a somewhat common mid-lateish game weapon) breaks in about 36 hits.

The Dragonbone moblin club (a common mide-late game weapon) breaks in 45 hits.

The Scimitar of the Seven (a special weapon you get for beating one of the dungeons) will last about 50 hits.

In the early game I found myself switching out weapons frequently.  By the middle of the game, I wound up throwing items away more often than actually breaking them.  

Alright then.  No hard feelings.

That is our problem. I couldn't imagine playing with the starting inventory size right now.

But, here is a hint. Follow the road the leads to Kakariko village.

I think you menioned earlier your kids went there first and found out about other basic controls, while you went to elsewhere. Well, one should really go to Kakariko village first and then go do or go wherever you want afterwards. Ignoring the main quest available there you can get general combat basics, your first chance at buying some actual armor. You find out what seeds are for. There is a goddesss statue easily seen that you probably can use at that point. It's really the second training area in teh game. It's loaded with stuff.