Have Covid Restrictions had an effect on the Flu

[Sousuke]

So today I came across a mainstream article warning that this winter may have a really bad flu season because people have lost immunity due to restrictions. My immediate reaction was, okay but if flu couldn't spread very well then it must have had an impact on the virus as well.

Found this: Some strains may have gone extinct.

https://www.livescience.com/flu-virus-types-extinct-covid-19.html