You're telling people who have played the game in question already, to watch youtube videos to get the "right" opinion of the game? Yeah... You're assuming that people don't already know the flaws of the game.
I'm going to take a random guess at what those videos cover:
PvE:
Lack of interconnected world.
Tons of bonfires.
Too many stats.
Nonsensical geography(Lava-lake above mountain)
Most of the bosses are human-like. (While this is true, I find it hilarious that people don't point out Bloodbourne has the same problem with big creature enemies, one of them is literally a blown up version of a common enemy even).
Poise is broken, and as such most heavy armor is pointless.
Broken hitboxes
PvP:
Because poise is broken, people get stun-locked easily. Also, the way blow trading works, no matter how slow your swing is, you and the enemy will trade blows if you attack at the same time, making longer heavier hitting weapons have an advantage, hurting build variety in PVP. Bloodbourne has FAR worse pvp, on the other hand
Did I get it mostly right? Because despite all that I still think Dark Souls 2 is a great game.