It's no longer about the quality of the camera that shoots the photos--it's about the quality of the moments captured. A one- or two-person professional photography team will miss 95% of the actual moments, the exchanges of genuine emotion, compared to a 10- to 150-person team with their smartphones. Again, it's no longer the 30 x 40 inch canvas that is the hook, the closer, the big sell. Photos are not the same thing they used to be even 10 years ago. Is wedding photography dying? No. But it is changing, and it has changed from what it was in 1910, and 1950, and 1980, and in the year 2000. The last time somebody asked me if she could show me some wedding photos, she pulled out an iPhone 6s.
In multiple ways, an iPhone or an Android phone is a much,much,much better wedding memory-grabber than a Hasselblad 500 C/M and a 50/80/150 lens trio ever was. The smartphone shoots video, has no 12-frame limit, has hyperfocal DOF, is silent, not loud, and is very high-capacity, and can shoot,shoot,shoot,shoot. Having 10 to 40 of those things at a wedding means that thousands of stills are available to the B&G.