I have never met pair of socks that spark joy.

Yet, I need those socks when it's cold outside and my feet are cold. But that will never spark joy in me. Same for mouthwash. Never will it spark joy. Frustration maybe, but not joy. And I will keep it because my teeth need it despite it hurting my tongue to use it. The same again with clothes. I, unfortunately, have no ball gowns - which do spark so much joy in me - because I will never attend a ball! But I have plenty of good sturdy, long-lasting clothes that do the job I need them to do. Do I like my clothes? Sure, but they don't really spark any joy at all. So if I got rid of everything in the closet that did not spark joy I would have literally nothing to wear but a few items of clothing unsuitable for daily living. And no shoes to wear because I have D+ width feet and having shoes that spark joy and shoes that fit is a ven diagram that is very, very tiny. So tiny I have never had a pair of shoes that really sparked joy!

Now, having said all that, I am not anti-declutter! I just think a better methodology than "it sparks joy" is needed or you will not end up owning things that serve you, and you will end up serving them instead.