That's reasonable enough.
On the other hand, it's selective at best to limit the applied focus to his donations.
He's spent a lot of time/effort working at and building up Mozilla, a Mozilla that has an equitable/inclusive code of treatment, a Mozilla where by several LGBT accounts his co-workers felt interaction with him was free of aggression, a Mozilla where where co-workers felt free to defend or reject his appointment. And he invited everyone to judge him by those standards had he kept on.