While it's certainly not a good sign, you have to consider the huge error bars on the statistics in that study, and the fact that nobody in that study (both in

While it's certainly not a good sign, you have to consider the huge error bars on the statistics in that study, and the fact that nobody in that study (both in treatment group and control group) caught severe COVID-19 that would require hospitalization and/or died, so there's no data at all yet on whether it's effective in preventing hospitalization and/or death.