What you’ve done in your life time can eventually be condensed into information 

This information can be erased, artifacts of your actions destroyed over the course of history - the memory of you, gone

Now imagine entire civilizations, collections of folks could be removed from the history this way - crazy

creating and destroying; flying cars, jet engines, roc.camera, july.rocks /july /faust

cybernated extinction or digital genocide; just depends on the catalyst & conditions.

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It doesn’t even have to be digital either, we can take all the information about Troy, or Ancient Greece, destroy all traces of it, and there would be no proof it ever happened (easier said than done of course)

Destroying historical artifacts means destroying the idea of them existing in the first place

I see what you’re saying, for sure. I draw a distinction between removing the living tense culture vs removing from history entirely. 

The irony is, any cultures that have been truly wiped from history would be those of whom we have no knowledge! 

Hard to “know what we don’t know”. 

Immutability is illusory.

More “centralized” civilizations that didn’t have connections with other civilizations- take the Mayans had more of this problem where it was possible to wipe out the culture and leave only ruins behind - I agree though generally speaking it is hard to “wipe out” completely - reality tends towards complexity

Depends. 

I think this remains highly theoretical for the simple reason that there are typically vestigial artifacts that are v widely scattered. 

Buried, passed down, on mountaintops, cave walls, oral tradition, etc. 

Such a “material diaspora”, if you will, is truly “decentralized” in the purest sense.