Flameshot solves a specific problem well: the capture is usually not the end of the task. Most people taking screenshots for work also need to point at something, hide something, or explain something immediately after the shot.
It fits support staff, writers, teachers, QA testers, and anyone who shares interface feedback often. If you mostly capture an image and keep it untouched, the benefit is smaller. If annotation is part of the job, Flameshot becomes far more compelling.
What makes it worth installing is the short path from screenshot to usable communication. Arrows, rectangles, text labels, blur, and fast export are the features that save time, not the screenshot itself.
The limit is that Flameshot is not a complete graphics editor. For long edits, layered composition, or pixel-level work, another tool will still be better. The right expectation is fast visual explanation, not full image production.
This site recommends Flameshot when screenshots are part of your working language. Set the hotkey, save path, and a few annotation defaults first. If it shortens your capture-to-share loop within a day or two, it is worth keeping.