That study and 66 other studies are cited here: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6993921/ Their conclusion is that masks work. Their critique of Jacobs is that it was "underpowered". You need to look at all the science, not just the science you agree with.
Selection criteriaIn this update, two review authors independently applied the inclusion criteria to all identified and retrieved articles and extracted data. We scanned 3775 titles, excluded 3560 and retrieved full papers of 215 studies, to include 66 papers of 67 studies. We included physical interventions (screening at entry ports, isolation, quarantine, social distancing, barriers, personal protection, hand hygiene) to prevent respiratory virus transmission. We included randomised controlled trials (RCTs), cohorts, case‐controls, before‐after and time series studies.
Nowhere in that study did they isolate masks and address their effectiveness as a stand alone measure. Their conclusions were based on all of the criteria cited above.
Go sell your careless reading skills somewhere else.