Thanks for your input.
I understand that the mountain won't move nor that gradients understands only groundspeed.
My question is, why there are some charts which contain IAS instead of GS?
Could it be possible that in these places the countries's CAA designed the procedure considering a safety margin with a strong tailwind? That's my main concern, because if it doesn't (which I find difficult if they are ICAO member states) then the IAS information in SID chart is wrong.
And I wanted to find some document explaning this.