Like some of the other lemmy instances that make being "against tankies" their entire identity I would have thought would love to spam that symbol.

They don't use it because it's a lib talking point that the SPD were willing to form a united front but the dogmatic Stalinist authoritarian KPD refused to play along which cause the Nazis to consolidate power. They then segue this to how you should not repeat history by voting for some neoliberal ghoul.