Certainly we saw significant job losses, as well as people whose jobs were restricted, early on in the pandemic.
When thinking about the CERB, we have to keep in mind that it was really three benefits rolled into one. It was a classic unemployment benefit, which was extended both to the employed and the self-employed, but it also played the part of effectively a sick benefit as well as a caregiving benefit, which are benefits that are not necessarily covered under our existing programs, such as employment insurance.
We know that people who applied for the CERB applied for a variety of different reasons. For some of them it was because of job loss or income loss due to the impacts of the pandemic, but for others it was because they were under quarantine or in isolation, or because their job was still there but they had to stay home to look after children because schools were closed as well as other care facilities.
I suspect that a big part of the discrepancy you are pointing to has to do with that particular diversity in the reasons for which people were applying for the benefit.