The 2023 TdF stage 16 really drove in the importance of aerodynamics vs weight. Vingegaard did the whole TT with his "heavy" Cervelo P5 with a disc rear wheel no less, whereas Pogačar swapped to a much lighter "climbing" bike before the 2,5km 9 % climb at the end of the stage.
In the end Vingegaard smoked Pogačar and kept gaining time throughout the climbing section even though Pogačar was on a much lighter bike. Granted, Vingegaard was ahead before the climb started, but Pogacar just kept on losing a LOT of time on the climb.
From what I could scrounge up there's almost a kilogram of difference in bike weights between the two and with Vingegaards high profile front rim and disc wheel a lot of Vingegaards weight was rotating weight. Considering how light the two riders are a kilogram is significant.