WHY are the Draugr and dragon priest carrying up to date currency?????
all there gold coins have Tber Septim on one side and the dragonborn symbol on the other.

They should be carrying ancient gold coins which are square with a picture of Aldruin on one side and a map of skyrim on the other.

The same reason why foxes or deer sometimes have money... it's a video game.

It is odd that gold was included in the loot for their leveled lists, but it's not a big deal. Draugr probably collected the gold from someone that wandered in, and it was shiny so they kept it.

I ask myself the same thing when I find a relatively modern book in a tomb that hasn't been opened since the end of the first era.

It's a video game, let it lie. If they had to adhere to all of these things that the players expect, the game wouldn't be playable for the next 5 years!

What about those fresh cabbages I found in a tomb sealed for centuries?

Why are century long sealed tombs full of Draugr full of lights?