I’ve found There’s not a lot of quality difference in single speed coaster brake hubs anymore. Used to , if it said Bendix or Shimano you could depend on it lasting .
Recently I think I read somewhere that KT was making the Nexus single speed coaster brake hubs for Shimano.
I have a rim brake installed on the front of my single speed bikes , so I don’t have to depend on using the coaster brake . I only use it like an emergency brake .