Of course a girl group is going to mention dc b/c dc was the last mainstream girl group to make it far. Girl groups were out of style by the time they made their last album and lables weren't pushing groups anymore.
Yes, Destiny's child was really popular, made their mark, broke records ect, but that doesn't make any of their music timeless. Rihanna does that as well, but you claim her music isn't timeless. That means all of Rihanna's number one singles are timeless, especially the ones from her edm era (I disagree, but this is true going by your definition of timeless, which is incorrect) Just because something was popular, doesn't make it timeless.
It's clear that you do not understand what timeless music is. Timeless period especially if you are saying "bootylicious" is a popular saying. I'd like to see you try to compliment a woman with that. I bet she wouldn't give you her number. That is a phrase that will only ever be okay to say if you're in the early 2000s meaning that just like their music and clothes from that time period, it is not timeless.
The only timeless song people can accurately say beyonce has is Crazy in love.