I'm curious if that's just because zero flu cultures were ordered this year. People may have had the flu and covid, but they weren't testing for the flu.
My feeling from speaking to doctors (including an ENT specialist) is that while in our perception Covid eclipses everything else, for them it's just another infection on top of everything else.
So I would be very surprised (and see no indication) that doctors suddenly stopped doing standard diagnostics.
Everyone presenting with flu-like symptoms at the clinics and hospitals that are part of the surveillance system get tested for about 30 pathogens. No one has stopped testing for flu.