Either the present perfect that you suggest or the past perfect originally presented is correct, and the denotation is basically identical. The connotation is slightly different, as the past perfect puts more emphasis on the "started...lately" and the emergent nature of the phenomenon, and the present perfect on the ongoing state of what was started, but there’s no giant difference.
alt Hacker News
Either the present perfect that you suggest or the past perfect originally presented is correct, and the denotation is basically identical. The connotation is slightly different, as the past perfect puts more emphasis on the "started...lately" and the emergent nature of the phenomenon, and the present perfect on the ongoing state of what was started, but there’s no giant difference.