I also don't really see the point of this video, and not even why it carries the headline of "cliches". Because a lot of those these aren't actually cliches.
From Wikipedia:
A cliché or cliche (/ˈkliːʃeɪ/ or /klɪˈʃeɪ/) is an expression, idea, or element of an artistic work which has become overused to the point of losing its original meaning or effect, even to the point of being trite or irritating, especially when at some earlier time it was considered meaningful or novel.
10 - Big Inventory. Most games use it. Some games don't. Tons of different methods around. Not a cliche and not a stupid mechanic either.
Doesn't mean that some games don't push it over the top. But these are, as shown, console games.
09 - Classes. Well…lots of games use them, lots of games don't. Again, different attempts. If classes are implemented they usually make sense. Not a cliche, and not a stupid mechanic. Again, as shown in the video, maybe overused in console games.
08 - Heroes get away with anything. True for some games…not true for others. I think in most PC games the bad things you can do either have something attached to them like a steal mechanic, or if you kill a friendly you are attacked by guards. Or you are unable to kill friendly NPCs alltogether. But out of the first three things, I can see a problem here the most.
07 - Destroyed hometown? Never thought about that and never really encountered it I guess. The only exception would be all the Fallout games, because you start in the shelter…but that's kinda the point of the whole series, to go out into the world.
06 - Repetitive NPCs. Ok, yeah, I can see that. It's used in a lot of Games and is quite stupid. Can still hear "You know, if you have the aptitude, you should join the Mage's College in Winterhold." That's actually something games could improve on.
05 - Rats, Bats, Spiders & Skeletons. Used often indeed. But don't see anything bad about it as long as you don't start off your adventure by killing like 20 rats first. But these times are gone for quite a while, at least on the PC I'd say.
04 - Magic Macguffins. I actually don't think that this one is used very often anymore. If it is used though, it is mostly indeed very stupid (Lords of Xulima). Maybe also mostly a console thing?
03 - Amnesiac Characters. Well, Planescape torment is an unfair example as the whole game is centered around it. The single other game I can thing about it which used it was Divinity: OS. But besides of that…
I would hardly call that widely used. And it is hardly used as a cheap way to introduce you to a world. At least not these days, and at least not on the PC.
02 - Chosen one. Yeah, that one is very true and is actually getting on my nerves. But this is also because I hate large scale stories where you need to fight something like gods or something abstract like "the void". If games would stick to "to the ground" stories, they would also not need a "chosen one".
01 - Nobody is able to do anything. Like the chosen one, also very true and imho another thing I'd call bad writing. There are much, much better stories to tell then to let the hero do some minor tasks for some NPC. It's especially stupid if it's coupled with "the chosen one". And of course MMOs rely on this as these just need tons of quests. The example of Witcher however was kinda bad imho. The Witcher is a mercenary and he will do anything for Gold.
Honorable Mentions:
Oversized Weapons: Console
Skimpy Armor: Mostly Console
Magic Stomach Syndrome: Very true. But I think most newer games, which aren't Hack n Slay actually go for a realistic loot system.
So in the end…there were like 3-4 Things which are actually used more often than they should.
All the other things…either irrelevant, or hardly existent on the PC (excluding Asia/ Console imports)