They answered the call of their President, page-5

On videos within the Capitol during the insurrection, that's mentioned constantly:

"What do you think Trump wants us to do now? He told us to come here, we're doing what he wants... What next?"

QAnon was a perfect radicalisation tool for the domestic terrorists that attacked the US Capitol. They were used to "interpreting" Trump's coded messages in tweets.

Then he told them directly to march on the Capitol and they did. They just couldn't figure out the next bit.

Damned cryptography. Where's Alan Turing when you need him?