This is the precedent that says that while parts of Damore's memo would be protected by labor laws, "the statements regarding biological differences between the sexes were so harmful, discriminatory, and disruptive as to be unprotected" and if "an employee’s conduct significantly disrupts work processes, creates a hostile work environment, or constitutes racial or sexual discrimination or harassment, the Board has found it unprotected even if it involves concerted activities regarding working conditions," and concludes "that the memorandum included both protected and unprotected statements" and Google only fired him for the latter?

Yes, I imagine they're happy about that. It confirms that they're protected.