There is more photography happening now then there used to be, but there has been a lot of photography happening for quite a long time.
The difference is that it is far easier to share one's photography with many other people. And narcissistic, egotistical people insist on sharing.
In olden times, in order to share your work you either needed work which was of a calibre that would impress people who had control over the means of distribution (book publishers, magazine publishers, newspaper publishers, gallery owners) or you needed to have enough money to buy that sort of distribution.
Nowadays, access to the internet gives you the ability to distribute - you just need to make sure you get noticed.
And narcissistic, egotistical people are great at getting noticed.