I definitely don't think we have reduced creativity just because of a change in society. I think if anything we are about to enter a creative renaissance.
In the original Renaissance, it was quite expensive to afford paints and canvases. Nowadays anyone can afford art supplies, but even more so, almost everyone has access to a computing device of some type. We can create art on our phones and tablets and computers.
Almost every single person has a tool in their pocket that they can use to access a vast array of knowledge from all of humanity, and use that to create their own forms of art.
No one in all of history has ever before had access to such a vast library of knowledge such that people nowadays carry around in their pockets. Likewise, even the previous generation has had more exposure to narratives in the form of books and TV more than any previous generation. Every single child today can draw on that wealth of creativity and knowledge, and use it to create their own unique stories and art. Nowadays people create art that is noteworthy as a hobby.
Sure, maybe it's not the way that things used to be, and we'll have to change things to ensure we get more exercise, but I don't think those are difficult things to surmount. As technology becomes more and more portable, we'll likely overcome the current issues we face, and in the end, we'll look at this time as the beginning of something amazing.
Yep, as I wrote on another comment, perhaps our creativity is simply expressing itself in different ways than before. More in the digital world and less in the "real world.
The face we have access to more information should not be something bad, it should be positive as it allow us to be better informed about everything.
I do think our world is changing and will continue to have big changes thanks to technology. The coming decades are going to be crazy!
Cheers mate!