Do people still use $language editors?
My impression was that everyone uses their $EDITOR and integrates languages support via plugins. The only exception to this rule I know is Emacs (org mode). I really doubt a standalone md editor will get traction, no matter how good it is.
Sometimes it is nice to have a separate application for notes compared to the editor being used for code. It means they can be customized for their individual purposes. Sometimes there are minor inconveniences (I miss multi-select/change in Obsidian sometimes), but even when I used an editor for my MD notes, I found myself using SublimeText for that while I used VSCode or IntelliJ for coding. Just a 1 of 1 experience, but as mentioned elsewhere, there is a large adoption of note taking apps separate from code editors, and a few of them use markdown as the underlying file type which I require for anything I use for portability.
Valid skepticism! A few counterpoints:
Market exists: Obsidian has 1M+ users, Typora is popular, iA Writer has a loyal following. These aren't VS Code users who wandered off — they're writers, PKM enthusiasts, and note-takers who find IDE-style editors overwhelming for prose.
Different audience: Developers might prefer VS Code + Markdown Preview Enhanced. But Ferrite targets people who want a focused writing tool, not a general-purpose editor that happens to support Markdown. Think "writing app" vs "code editor with Markdown support."
Native advantage: Most Markdown tools are Electron (Obsidian, Typora, Mark Text). Ferrite offers instant startup, lower RAM, and native performance — appeals to the "I want my tools to feel fast" crowd.
You might be right that it won't achieve mass adoption. But there's a niche for "Obsidian but native and lighter" that I think is underserved.