I use Obsidian myself, which simply stores text in Markdown files. It essentially shares all the pros of plain text: it'll be readable in the future, I'm not stuck with a single platform, I can sync and sort them into directories.
And bonus: Obsidian-like apps are their own subcategory now. Once you start using one, you can usually just open the root folder in any of the other apps and give them a spin with very little setup.
When I switched to Obsidian, I decided to not use any third party plugins. For this very reason. Keep it simple enough that I can switch to something else later or just open the directory in Nvim or VSCode.
