- External pressure, including a high profile boycott campaign, was widespread and widely reported
- Brendan Eich remained a Mozilla employee for years after his donation was first publicly discussed (in the LA Times and on Twitter), with no apparent pressure to leave. The board appointed him CEO with full knowledge of his views and knowledge that they were publicly known.
- There were relatively few public statements from Mozilla employees asking him to resign, and none from executives or board members.
- I think it's unusual for companies to explicitly lie and say "we tried to get them to stay". It might even expose them to defamation claims or something. If the board forces a resignation, they'll just say "they resigned" (which is technically true) and leave it at that.