No. "Rejecting democracy," a position held by myriad political currents, each of which probably means something different by the term, is basically a run-of-the-mill ideological position. (It's not one that I hold personally, in case anyone is thinking about downvoting for "extremism.")
You know what's linked with terrorism?
Terrorist acts. That is: sporadic acts of intense, spectacular violence and devastation designed to rock and destabilize some existing political order. Usually but not always from "below" (sometimes it's literally from above, like from a B-52).
I'm concerned pretty deeply, but very, very far from being terrorized by the pathetic spectacle at the Capitol. One reason for that is I don't take the extremely hyperbolic US press as literally as so many seem to.