That’s what it said at the florist shop.
I’m guessing because ‘taking’ a photo sometimes feels like a taking. The creativity, skill and effort that goes into making a distinctive arrangement might feel uncompensated when someone simply takes the work and posts it.
This misses the real point, though.
Once you’ve made something worth photographing, having the idea captured and spread helps you, it doesn’t hurt. More than ever, people are paying for famous, even if it’s as prosaic as a famous bouquet, produced by the originator of the design.
The hard part is making something worthy, not protecting it from cameras.