It does not cast doubt based on peer reviewed research with evidence.
No, because like the articles you link to it is popular science. Unlike many of the articles you link to it seems to have been written by the authors of the 2020
Nature study (which was peer-reviewed).
It is subjective conjecture as to what a paradox is in science.
It is not. It is a paper that is based on new work since ~2016 first in theoretical foundation physics and quantum foundations and then in experimental realizations of this work published in some of the world's leading science journals (such as
PRL, Nature, Science, etc.).
At best it is 'arguing from ignorance' based on maybe unknowns in Quantum Mechanics.
The argument is based on the experimental side on work by the lab behind it as well as another whose work was published in
Science last year (and of course earlier realizations and implementations of theoretical experiments such as Bell-type tests iQIT or EPR realizations in quantum photonics and so forth). On the theory side, the work stems out of a 2016 arXiv paper by Frauchiger and Renner later published in
Nature Communications. This work caused quite a stir in the quantum foundations community.
If you want to pursue this further let's go with some peer reviewed research that justifies this claim.
Let me know if you need access to any of these:
BIG Bell Test Collaboration. (2018). Challenging local realism with human choices.
Nature,
557(7704), 212.
Bong, K.W., Utreras-Alarcón, A., Ghafari, F., Liang, Y.C., Tischler, N., Cavalcanti, E.G., Pryde, G.J. & Wiseman, H.M. (2020). A strong no-go theorem on the Wigner’s friend paradox.
Nature Physics, pp.1-7.
Brukner, Č. (2017). On the quantum measurement problem. In R. Bertlmann & A. Zeilinger (Eds.)
Quantum [Un]Speakables II: Half a Century of Bell’s Theorem (pp. 95-117). Springer.
Brukner, Č. (2018). A no-go theorem for observer-independent facts.
Entropy,
20(5), 350.
Brukner, Č. (2020). Facts are relative.
Nature Physics, 1-2.
DeBrota, J. B., Fuchs, C. A., & Schack, R. (2020). Respecting One’s Fellow: QBism’s Analysis of Wigner’s Friend.
Foundations of Physics, 1-16.
Frauchiger, D., & Renner, R. (2018). Quantum theory cannot consistently describe the use of itself.
Nature communications,
9(1), 1-10.
Healey, R. (2018). Quantum theory and the limits of objectivity.
Foundations of Physics,
48(11), 1568-1589.
Proietti, M., Pickston, A., Graffitti, F., Barrow, P., Kundys, D., Branciard, C., Ringbauer, M. & Fedrizzi, A. (2019). Experimental test of local observer independence.
Science Advances,
5(9), eaaw9832.
Vilasini, V., Nurgalieva, N., & del Rio, L. (2019). Multi-agent paradoxes beyond quantum theory.
New Journal of Physics,
21(11), 113028.