I’ve seen these all over Europe. Some have simple images of the cross flashing, some have windows screensaver esque animations, and some have 3d renders of various things rotating in all sorts of ways. Why is that? Wouldn’t a simple green cross be enough to get the point across, or do they need to be overly verbose? Here’s the full video instead of a gif
I mean, the lit-up signs are for visibility. In some countries pharmacies are assigned strict working hours by the government, so it’s useful to see at a glance if a pharmacy is currently open without having to walk right up to the door (and night shifts may require ringing a bell in some of them, so that’s also helpful to convey that they are in fact open).
The fancy animations are just because when signs went from neon-lit to LEDs it turned out not all pharmacists have good design sensibilities. At least as far as I can tell.