It would be useful if there were a function that enabled the animation of multiple tiles as a whole. For example, being able to select multiple tiles at a time to create an animation. Currently, the animation function only allows one tile at a time.
That’s right, the current UI is not suitable for mass-animating tiles. Fortunately, somebody wrote an extension that makes this much quicker in most cases: https://github.com/lukas-shawford/tiled-bulk-animations. In the latest version, it’s even easier than the animated demo suggests!