With respect, this is absolutely not true. Some of the best known photographers working today are quite awful. Possibly if you are very very careful in just which "top" you're referring to, you might be right, but I doubt it even then.
Although it is a matter of personal taste "good" photography, as with other art forms, is distinguishable.
The fact that there is a lot of photography to choose from does not change that.
In addition there is difference between a commercially successful image and an artistically successful image even if to some people that is merely a semantic distinction.
In every era of art there have been fads and styles that have been popular.
The work of some artists have stood the test of time transcending temporary popularity.
Photography, as an art form, is relatively new, so lets wait and see whose work stands the test of time.
I agree that some of the work around now that seems to get a lot of attention, and money, does not necessarily do a lot for me.
Who knows whether I am correct in my assessment or whether this stuff is still sought after in decades and centuries to come.
Tony Jay