Good News! It appears the Chrome team has decided to roll back the change:
We still recommend upgrading to ShoutCast 2 though as shoutcast.com will likely remove version 1 stations at some point. We're not sure on the status of other browsers in the future either.
https://bugs.chromium.org/p/chromium/issues/detail?id=669800#c103After much discussion and looking at how many users this impacts, we plan on re-enabling HTTP/0.9 over ports other than 80 for Chrome 56. We'll remove it again in Chrome 57, but we'll also add a hack to allow it just for responses that look to be from Shoutcast servers (Ones that start with "ICY"). So behavior should be just like it was in Chrome 54 and earlier going forward, for Shoutcast servers (Worth noting this does not quite match FireFox's current behavior).
We still recommend upgrading to ShoutCast 2 though as shoutcast.com will likely remove version 1 stations at some point. We're not sure on the status of other browsers in the future either.