Sharing quick sketches is still an unsolved problem. Instagram solved it for photos and 4chan + meme generators solved it for collage like memes based on exploitables but there’s nothing simple enough for hand-drawn stick figures. You either use a drawing program or photograph paper/whiteboard.

Blogger at ribbonfarm.com, running summerofprotocols.com, host of /gloom ☀️

https://scribbletogether.com/ is getting closer to the direction you’re describing imo. not quite a full drawing program, but canvas allows sharing without creating an artifact