Looks like they got a retard to make the video.
Well that kind of style is popular. Testing mod right now.
I love that they reworked tutorials to get all W3EE features and they did a lot of work to script tutorial to get extra pages, interactions etc. Basically if you want to learn properly W3EE changes just play TW3 tutorial area at start.
Imho mod definitelly deserves proper video detailing changes. There are just to many of them so they can't even put all of them in mod description. So far best parts of that mod are unleveled world + unleveled gear, combat changes, alchemy changes, crafting and relic weapons.
Relic stuff is really interesting. In vanilla game you either found relic or just recipe for it which was straightforward.
In W3EE you find usually relic stuff but you can't use it from get go (you can't even equip it). You need to refurbish it which requires resources and money which is very expensive. On other hand since weapons/armors no longer have levels gear focus on abilities it gives you instead of damage and armor value. So all relics are unique (though some are better some are worse naturally) and give you something to create or fit into build and that gear is usable till the end of the game.
There are occasions though where you don't need to refurbish them.
On other hand standard non relic gear now crafting requires ingredient TYPES instead of specific ingredients and quality of armor depends on what kind of quality resources you will use. So armor A made from wood scraps, basic iron, etc will have worse stats than armor made out of hardened wood, mithril etc. Rarity of armor/weapon then is based on that. So common items are made mostly out of common ingredients, magic from magic, etc etc etc. It is waaaay better and more interesting system than vanilla crafting and makes a lot of sense. It also gives reason to explore world.
Alchemy is basically one of the best mods for TW3, you get basic ingredients like Rebis Vitriol etc known from TW1 and you have quality and concentration which gives you ability to create more powerful versions of pontions by getting better ingredients instead of like idiot looking for recipes like in vanilla and then restocking potions with just common alcohol. Also each ingredient also have secondary primal essence like Rubedo Nigredo etc. So if you get all ingredients having each secondary atribute in one color you get extra effects like life regeneration for Rubedo. Each potion and decoction is rebalanced and there are no weak potions/dococtions like in vanilla.
Non scaled world and gear is amazing. Swords are swords, bandits are bandits, drowners are drowners. If you see human in armor you can expect tough fight if you see bandit only in pants then you can cut through him quickly. Gear is unscaled but it doesn't mean there is nothing to chase. There are plenty of new effects on armors that will give you enough reason to get loot and create those various builds that this gear enable it. Thanks to unleveled gear also your gear will not become useless after a while. There are still upgrades to get but they are less game changing than proper stats.
Poise. Yup, you heard this right. No longer Geralt staggers like idiot. If he wears heavy armor and has poise build and gear based around this then you can go through most of attacks even some monsters unblockable attacks depending on poise can't stagger Geralt.