Open source and decentralized nature of Nostr makes it very challenging to promote growth in any way, shape or form. The only way always has been to rely on organic slow grind which can take years and decades
It just like Bitcoin - you can not sell the idea to someone who has no real need for it and/or is not open to jump into the abyss of the unknown
nostr:note15eet95lgen78xje3edgjaknujt3es2e6zdpkydgrmk7v9f6s980qvt7042