I think he did it with his own money, which HP paid him.
There are plenty of companies out there which are blatantly into the culture of death and are proud of it, without knocking a company just because their founder was a kook.
Bill Gates has given plenty of money to "third world family planning" (including abortion) and similar initiatives, so don't buy Microsoft. Warren Buffett has too, so don't buy GEICO insurance or Fruit of the Loom clothing (both owned by Berkshire Hathaway). The Ford Foundation (not FoMoCo) has, too, so don't buy a Ford automobile. And so on.
You have to either pick your battles carefully or live like the Amish do, it seems.
Or both. There's more than one reason to live simply and reduce one's level of consumption.