Do you know of an article that describes the concern you and nostr:nprofile1qqsrhuxx8l9ex335q7he0f09aej04zpazpl0ne2cgukyawd24mayt8gprdmhxue69uhhyetvv9ujuam9wd6x2unwvf6xxtnrdakj7qgnwaehxw309amk7apww468smewdahx2tckuej4c have about nostr's lack of decentralization and what other systems to compare it with that meet the standard you are applying to consider it sufficiently decentralized?