Context: The Reichstag Fire is widely believed to have been a false flag and was the pretext Nazis used to persecute all German communists as “Enemies of the nation”
This dude is literally implying that
A: The shooter was a fellow fascist,
B: We should follow the example of the Nazis, or
C: Both of the above
To these people, the internet is less of a platform for discourse, and more of a closed box like a crane game or gachapon. Their whole relationship with it is a series of isolated transactions, nothing more. They walk up, mash some buttons and, with some luck, get the output they want.