Not to belabor the "startup" debate but they actually do discuss growth goals on the blog:
"We don't want to speak for you, but we're sure you've felt it: Ever notice how your favorite applications seem to get slower over time? That's no coincidence. They call that "growth". It happens because panicked teams were frantically trying to throw more functions at what was a good idea for some stupid business goal. And a good idea turns into something that isn't, real quick. That thing you loved metastasized into something you hate.
If simplicity keeps us from adding features, so be it. Standard Notes is officially an anti-growth company. We don't mind. We set out to do one thing well: Allow you to write your notes and thoughts privately without friction, on every device you own..."
https://blog.standardnotes.org/why-simplicity-is-the-only-wa...