Quoted By:
I almost forgot about this too... Geeta renovated the Academy a couple of years ago (which means it was before Clavell and the new teachers joined the Academy, before the whole incident with the bullies).
What better moment to erase the evidence of Terapagos from the Scarlet/Violet books than when the academy is being renovated? And it probably means she was the one who added that giant Poké Ball on the Academy (which was ALSO said to have been added recently). I'm almost entirely convinced that Geeta is behind this now.