I'm very far left myself, but I hate this tendency to equate any intellectual engagement with the right wing thought whatsoever with support. It's almost as if rightist politics were some kind of cooties that you catch simply by being in the same room or something.
If the other founder went "here's his blog post where he discusses <these ideas> that potentially justify the support for this party without just being support for right right hate and other political positions" that would be intellectual engagement. That's not what occurred here. What occurred here was a vague gesture in the direction of far right writing as if that somehow justifies the concept.