Decided to move my journal over to Obsidian, taking up one of the 8, now 7, remaining vaults I have on my Obsidian Sync Plus plan. So far, so good. Offers a pretty decent writing experience — a nice thing about using Day One — while allowing entries to be plain Markdown files — which is nice about my bespoke solution. There are also some nice features with using a native app, such as having it launch on login, ready to start a new entry at a click of a button.