Everyone is now posting on LinkedIn about SuiteScript 1.0 being removed and to switch to SS 2.1. Some even mentioned that SuiteScript 1.0 always break with every new release. Couldn't reproduce any evidence when asked by a few in the comments. Said they heard from the "devs"

I've seen at least one guy there claiming its deprecated. Its not. I work there and I just double checked our documents. 1.0 not being updated is all

Aren't there some official suiteapps that uses 1.0? Did Oracle update all of them?

I could flip through them but I would say you are probably right.