Getting a little heated here so I'll try to rephrase the question I think some are trying to pose.
First, set aside the argument about recycling since that is not universal and injection wells currently exist. Second, any method that creates wastewater, leading to the need for an injection well, does occasionally increase seismic activity.
Now, doing a side-by-side comparison between "traditional" drilling and fracking, does either method - more often than not - produce noticeably more wastewater than the other? If the answer is no, then your point is 100% valid that fracking does not have the downstream effect of increasing seismic activity (as compared to the other method). If either method typically produces more wastewater than the other, it is then fair to claim that such method leads to increased seismic activity (again, as compared to the other method).