Very well said.
To add to this, their open world design has taken on such a philosophy as well. Full disclosure, i've only played the first 4 Assassin's Creed games and all my opinions are currently based off of those 4 games.
If you've ever explored an Assassin's Creed open world you'll have noticed a number repeated architectural designs. All the towers you climb are identical in terms of shape, texture and size. Shops all identical as well as vendor carts, house top gardens,etc.
The world is made up of re textured houses like this. With the same geometry, same colours, same windows, etc. Now imagine an entire world made up using a variety of these assets just rearranged. It's boring to look at and walk around in. Some of the best part in Assassin's Creed games are the historical recreations of famous landmarks because they're original.
It's not like a Grand Theft Auto world that almost relies on so much original art and geometry to really make it feel like an actual place and not just one that's been created. The Assassin's Creed games feel cheap, manufactured and rushed.