From the conclusions:
In terms of comparative demonstrated factorisation power, we rank a VIC-20 above an abacus, an abacus above a dog, and a dog above a quantum factorisation physics experiment. Finally, we provided standard evaluation criteria for future claimed quantum factorisations.
With a grain of salt:
The first
real quantum computer built by humans would be created completely different than seen or thought before, basically by coincidence or by mistake.
Mark my words

yeah it will likely be an Issac Newton inventing calculus moment
if it is even possible for a human in a 3d reality to invent that new math needed.
and if it is invent it will appear to be magical or impossible