SARS2 and the Flu are very different.
CFRs have gotten lower for COVID, but are still >2x the Flu, just by official numbers, which are an undercount. Post-acute deaths from SARS2 are significantly higher, as indicated by excess death rates.
The risk of Long COVID is *by infection*, and your risk goes up with each subsequent infection. So when I say that 31m people got the flu in 2023 while (wastewater est) >241m people got COVID that same year, it's relevant.