I'm no fan of Google, but this seriously glosses over a rather complex situation. A paper may have been the catalyst, but I'd argue definitely not the reason for the firings. You can't just demand things with the threat of quitting, then act surprised when you're terminated.
The drama afterwards is largely irrelevant and if anything Gebru’s refusal to just meekly accept the company line demonstrates just how valuable she is in this field. The dismissal isn’t the real story, the retraction of the paper is the real problem the OP is referring to when discussing Google’s moral issues.