Gnome has their own screenshot tool and they also broke the workflow for Flameshot on Wayland recently. The internal API that was used to take screenshots was blocked, which is reasonable in and of itself, however the new public API has an animation, after which a special window opens and requires you to click a "share" button before Flameshot can work with the screenshot. You need to go through that every time you use Flameshot.

I like that they think of security, but this is the type of thing that forces people back to X11. Their own screenshot tool does not adhere to the same workflow, so maybe they are blind to the issue.

Considering that Gnome is now the default DE for the more popular distros, I doubt Flameshot will ever receive the honor of becoming the default screenshot tool, even though it should. It provides most of the capabilities that a user would need when taking a screenshot. Desktop Linux needs these little goodies, so it can be sold to the average user.