Your reading comprehension leaves a lot to be desired...
From the article you cite:
https://www.cnn.com/2021/02/03/politics/fbi-raids-capitol-attack-investigation/index.html
Thus in typical CNN fashion, they have made hyperbolic and unsupported exaggerated claims about what happened here. The FBI served two search warrants on two people and after executing these they left the property without any arrests and apparently not gathering much, if any, physical evidence since doing so would likely go with an arrest.
Sounds to me like the Democrats and Leftists running things now are doing their typical massive overreach and sending the police to harass citizens they disagree with in what amounts to "fishing expeditions" which are illegal.
No "sedition" charges are coming. In fact, it looks like no charges whatsoever are coming.