This is extremely widely misunderstood, one of those rampant FUD topics. Archive nodes in Ethereum are almost completely superfluous. An Ethereum archive node

This is extremely widely misunderstood, one of those rampant FUD topics. Archive nodes in Ethereum are almost completely superfluous. An Ethereum archive node is not the same thing as a full node. Archive nodes add zero extra security to the network. They are only useful for historical analysis of past states. 100% of the blockchain information is stored in non-archival full nodes. The Ethereum system is a series of transactions that modify a state. The system is completely defined by the transactions. The latest state can be derived from them. An archive node is a node that stores all past states for efficient retrieval.