You do realise that everything in Crypto is open source pretty much. All you need to do is check the source code and you will know if an Ice age will take affect or not.

MUSIC is basically forked off ETH. I don't remember which version they forked from but I am assuming it was the Frontier release. So if you look at ETH block time chart you will see that it wasn't until 2 years later after release that the ice age started to take effect.

MUSIC was released February 2017 so in the next few months we should start getting longer and longer block times and within 6 months they devs will need to do something to prevent a chain halt.