You mean ordering OPC members to not celebrate with Jews is not hate?
Correct. This statement is not preaching hate.
First, you must mis-characterize the link to make your point, which weakens your cause. There was no ‘order’ to OPC members. There was a ‘should not.’ Second, the reasoning is like this - Christ is our passover. It is a lie to endorse a celebration which has been fulfilled by celebrating Seder.
It is not hate, but actually an exhortation to truth.
. . . another . . . eye of the beholder . . . issue, imho.