He funded nakedly oppressive political activity. Passing a law to deny consenting adults the right to marry solely on the basis of their sexual orientation is oppression by itself. That Prop 8 had significant financial and legal consequences for tens of thousands of Californians is the proof that the act was overtly oppressive.
[1] http://www.dictionary.com/browse/oppress
The real reason conservatives have so much trouble in liberal places is their outright refusal to acknowledge their political and social behavior is profoundly harmful to segments of society.
The solution is so, so, so easy: a conservative person should simply find somewhere else to live if they are unhappy in any geographic regions where a lot of liberals are busy using their constitutionally guaranteed right to freedom of expression to build the kind of society they want.
Somewhere they can create a Christian cake shop in peace, you mean?
Law follows morality, not the other way around.
If abortion is murder, the crime of possibly creating a hostile workplace pales in comparison.
There is an a implications to everything. Have an opinion on healthcare, and someone might die according to you preferred version of it.
He participated within the political system, he did not "[believe] that it is okay to actively oppress LGBTQ employees", except, in your interpretation, by participating in the political system. This extends to "any potential employees who believe in LGBTQ equality" in the same way it extends to anyone with any political opinion; I could mirror the exact same sentiment wrt pro-choice - "believes it is ok to actively murder" etc.