As the pax have paid I suspect they are counted in Septembers pax total even if the sectors were cancelled. When they rebook they could be counted again. Ryanair traffic figure are nothing to do with people flying but just that they had a seat paid for. The airline "carred" loads of pax when all flights were grounded.
The usual insight into Ryanair..........not.
As planes didn't travel they are not counted as passengers, neither were they counted in April BUT you know that anyway but need an anti FR post.
Why does their success disturb you so much ?