Yeah this is it for me. I'm not a liberal, but it's very reasonable of every MP to think:

the speaker wouldn't invite a Nazi to be celebrated in the HoC, this guy must have been in the underground or something

Or honestly if Rota had said something like:

In WW2 Hunka was indoctrinated by Nazi propaganda, and had his patriotism twisted to support the Nazi regime against the Soviets. He fought in the Nazi SS Galician division against the USSR, seeking an independent Ukraine. He is horrified by the atrocities and genocide the SS and others committed in service of Nazism. He renounced his oath to Hitler at the first opportunity, but never gave up his support for an independent Ukraine. He is proud of Ukrainians like Zelensky fighting for a Ukraine that embraces democracy and freedom.

I think it would have been okay.