This is one of those soul-destroying things
you would expect/hope that Valve was more communicative with the contributors. A map that has been in the cycle for this long deserved it. Also it’s still winter, I don’t see why removing the winter-y maps now.
Only lesson I would make of it, is to try and engage with the CSGO team early in the process, maybe they weren’t expecting your update the map.
Hopefully it will be reintroduced next autumn ??