There is a difference between giant plates moving over millions of years (a process that cannot be observed and thus far has not been measured, despite early claims that it could) and earthquakes (a process that can be observed and measured). Geologists say the first causes the second which was at least a possibility when Plate Tectonic Theory was being put together.
But since earthquakes nowadays are mainly (wholly?) the result of fracking and not plates moving, (wherever both are a possibility) this causal connection is splitting apart at the seams. Not that geologists have noticed. Nor pretty much anyone else it would seem.