I will say that over time I've adjusted to Spectacle. Having it pinned to the taskbar is a good approximation of having Flameshot in the tray. Also a nice thing about Spectacle is that the window persists after you take a screenshot so you can then initiate, for example, 'New rectangular region' and it will launch you back into sceenshot mode with a rectangle of the same dimensions as the one you just took -- making it well suited for iterating with an AI coding assistant where I give it a screenshot with examples of a bug, then re-send it another screenshot showing what still needs work.