The FUD about nostr:nprofile1qqs9xtvrphl7p8qnua0gk9zusft33lqjkqqr7cwkr6g8wusu0lle8jcpzamhxue69uhkummnw3ezuurpwfjhgmeww3hhwmspr9mhxue69uhkummnw3exx6r9vd4jumt99aex2mrp0yn7plng seems quite retarded. nostr is an open network and developers can build on it as they choose. What they build can be applications, infrastructure, or both bundled together. Primal bundles the two together.
They have a proxy service which might fail, just like any other app can have a bug that effectively denies service to its users.