All pros, and no cons here.
Stay mysterious, and launder your mild flirtation with a depressive episode as an act of steely self-control, abundant self-love, bohemian blasé, bourgeois industriousness, and/or independent self-confidence.
Plus you don't have to feel bad about doing it. Social media apps can't suffer from psychic and emotional trauma. In fact, ghosting an app might act as a healthy form of release, and save you from ghosting an actual human.