He's talking about Lemmy of Motorhead who is one of the reasons Lemmy is called Lemmy.
Honestly from the memorabilia I just think that was Lemmy's passion, I was never a big motorhead fan but I've seen more than enough instances of his political thoughts to not really look down on him for his collection. He was a dude really passionate about that part of history and loved collecting stuff from it because he thought that the Nazis "looked mean". By that he meant cool. He had a collection of artifacts from all the Axis, stuff from Finland, the Baltics, Hungary etc.
I suppose you could say his collection and widespread appreciation for the aesthetic was a bit tone-deaf and strange but I never thought you could look at his work and his life and call him a Nazi. He clearly wasn't racist giving his romantic history and had a few interviews where he talked about his disdain for racism.
Fun fact Lemmy actually owned a german tank destroyer called the Hetzer, or the Jagdpanzer 38. His collection was extreme to be honest. He had artifacts from all the axis countries in Europe iirc. I often, when I was younger, wished I was so rich I could collection historical artifacts from ww2 like that. I was wanted a King Tiger, a Pershing and an IS-3, never actually saw service in WW2 in combat. I liked big tanks. Sadly I don't think I'll ever get any of those.
I use Kbin over Lemmy for the record.