Sadly, note that the study talked about here [1] is investigating the effect of the N501Y mutation, not the more worrying E484K mutation found in the South African 501.v2 strain that likely does escape antibody drugs and reduces neutralization by convalescent sera from past infections. [2]
[1]: https://www.biorxiv.org/content/10.1101/2021.01.07.425740v1
[2]: https://www.biorxiv.org/content/10.1101/2020.12.31.425021v1