I could not give less of a fuck about any of this shit, but, yeah, it's a fad that will amount to nothing, with no change, and the only people that benefit from this are those with said profile pictures patting themselves on the back for doing a heckin' good thing and receiving updoots (positive affirmation) for it.
It's like changing your profile picture to the Ukrainian flag. The country's been decimated; how will that help them in any regard other than satisfying your own ego? Fucking selfish basdummys.