Even if faketoshi stepped out now, it's far too late since the damage has been done. And Etheruem would be somewhat better example since it has 16.5TB storage usage[1], but with 7.3K node running[2]. Although node number is rather high since Ethereum use PoS.
For Ethereum, full nodes and archive nodes are distinct kinds of nodes. Full nodes are heavily pruned and only require the last 128 blocks of data to be stored. They represent the overwhelming majority of nodes counted on the Etherscan nodetracker page. Archival nodes, as the name implies, comprise the entire historical chain state and number between 3 and 12 in total.
Its actually not a problem if the archive node count dropped to zero; the entire chain state history could be extrapolated from the last 128 blocks of data, which is about 308 GB, and a new archival node spun up.
https://www.alchemy.com/overviews/archive-nodes