I tried using nostr reads via Primal but the UX of the text editor was bad and jumpy. I posted some articles and I think a total of 3 people read them. Substack's UX is pretty good and it pushes some posts through the substack app. The plus of substack is people can sign up to your newsletter using emails, so you can keep your list even if the platform nukes you. I mostly write about financial markets and the people on here don't really care.