Actually, the major official propaganda People's Daily newspaper urged authorities to review working hours in the industry.

Usually, if the official opinion is negative about this campaign it will never show on any propaganda.

I cannot find the original newspaper online, but there are several mentions from some websites:

https://en.wikipedia.org/wiki/996_working_hour_system

https://qz.com/1589309/996-icu-github-hosts-chinese-tech-wor...