I think theres a big difference between cutting early climbs vs cutting decisive climbs. I suspect they think they get away with a lot more if its early climbs canceled rwther than climbs the fans have looked forward to seeing the entire yearIf the whole spring is cold and wet (like 2023 and 2024) you have little to no time for the road maintanance work which is required, and you still get extremely cold days with temperature close to 0 on top (happened this week, ie the last week of the race). Bad road conditions + freezing temperatures is a no no for the EWP, as proven multiple times at the Giro in the last few years.
I'm 99% confident that the current peloton would have refused to ride Colle delle Finestre this week.
Besides, any plan B in the area would look absolutely dreadful compared to the original route, assuming a stage finish in Sestriere or Bardonecchia.
Road surface issues are on the climbs amd not the descent as well
Last year they were worried about Croix de Coeur and then had GSB canceled, and then in 2021 doing Giau was never in question despite cold and rain
By the way how cold was Stelvio 2020?