its more practical to say "download plebstr nostr:npub1plstrz6dhu8q4fq0e4rjpxe2fxe5x87y2w6xpm70gh9qh5tt66kqkgkx8j than saying "use nostr".

nostr is the protocol, just like an internet, while plebstr is the app.

for newcomer, using plebstr is easier to understand