Why did they make this new update?

I have no idea. It's like ending uranium's existence (which is a good thing irl, but not in a wargame)

Lack of traditional resources will increase demand for purple gold. Increased demand for purple gold can lead to more traditional gold usage/boosters to compensate for missing resources...which equals more income for Bytro. Sadly, this is no longer a game of strategy and game planning, but has become a game filled with magic and witchcraft thru purple gold/traditional gold/boosters.