Hell ya he was being lynched, THAT was the whole point of the campaign. And yes, I not only know the difference between the real gestapo and the gaystapo, I also know the difference between a private citizen quietly exercising his right to donate to a proposition AND a bunch of thugs acting like he is an existential threat to the moral and political order of the high tech industry.
Thugs use violence and the threat of violence to intimidate and bully people out of their property and freedom. Boycotting a company is not thuggish. Indeed, the freedom to withhold your financial resources from a private company is surely a freedom even a right winger would agree with.
What Eich did, on the other hand, was indeed thuggish. He used his financial resources in a (successful) attempt to get the State to continue to discriminate against gays and lesbians. Eich did not threaten to boycott companies that supported same-sex marriage, he wanted to directly ensure the State outlawed it. One cannot escape the violence of the State -- or perhaps someone with the towering financial resources as Eich could.
As usual, reality is the exact opposite of what you believe it to be. Eich is the thug.