Probably because of his 39 points in the IBU qualifying points list. One is removed from that list after five trimesters with no points scored. He obviously scored nothing in the previous season (= three trimesters), and the results in the two trimesters before those are changed to DQ's.
Only thing I can think of is that the qualifying points are somehow not taken away, at least not automatically. The races where his results are taken away have the qualifying reports now listed among 'invalidated reports', with him still in it:
https://ibu.blob.core.windows.net/docs/2021/BT/SWRL/CP08/SMSP/C74Q_v1.pdf
No idea how they've done the whole thing. You sure he'll compete in Kontiolahti?