Big chain rings at Giro Italia; the rest of bikedom returns to big chainrings?

Wheels of Happiness

Giro Italia has seen many top riders:   Pogacar, Ganna etc riding bikes with with 54 to 60 teeth and using the same for mountain/hill sections.  Even at Queen stages

I used to ride bike with 53 - 39 which I discarded for 50 -34 compact chain rings.   I could hardly pedal with 50 x 11.  And now these riders.  

I see a group of riders riding DOMSA uphill using 54 chain rings with say 30 to 34 cogs.  

Are riders getting stronger?  What has happened to world class riders.?  

Are we rest of the riders following suit