Udacity has a local Chinese version. Slack works, kind of. Google groups is a shuffling zombie abandonware project outside China so I fail to see how the lack of access within China will impact anything there.
I listed those platforms (some of which still work in China) just to illustrate that a lot of developer resources are indeed based in, or at least developed in, the USA.
PRC have proven repeatedly that they can and will arbitrarily block foreign services without notice. Slack works today, but how long until they decide that Slack facilitates too much discussion about Falungong, Tibet, Xinjiang, Taiwanese independence, or Tiananmen?
PRC have proven repeatedly that they can and will arbitrarily block foreign services without notice. Slack works today, but how long until they decide that Slack facilitates too much discussion about Falungong, Tibet, Xinjiang, Taiwanese independence, or Tiananmen?