I completely disagree. When I see a photo online, particularly a good one, I want to know how it was taken, including with what kind of lens, what aperture, what shutter speed, what ISO. I don't think this is "nonsense" at all. I don't see it as "bragging." How is it bragging? It informs me as to whether one captured the photo using perhaps a relatively inexpensive lens vs. a zillion dollar one, whether the reason for the busy bokeh is the choice of lens or aperture vs the photographer not having thought about the issue at all, whether the use of a very high (or low) ISO influenced the final image, etc. In fact, when people do NOT disclose image-related info I find myself kind of annoyed.
I will add that there are prominent photographers (Greg Basco comes to mind) who regularly write about "how I captured this image," with the exposure-related information being considered part of teaching/learning process.
If you don't care about the information related to how an image was captured you certainly don't need to even look at it. But I am actually kind of baffled as to how my including exposure-related information along with a photo can be considered "bragging."