unable to remove "Juuso Salonen" system extension

MacBook Pro, Sequoia, M1.

I decided to install the free trial for radio silence (app) in an effort to get more control over my Mac's connections.

but I found that Lulu does a better job so l uninstalled it.

however, the system extension "Juuso Salonen" still remains even after fully uninstalling the app and going into library and clearing out files that seem related to radio silence.

And if you were wondering, I looked up the system extension’s name, and it turns out the creator of Radio Silence named the extension after themselves.

as a note, am running my Mac off of an external SSD. (Samsung 970 1TB w/ ugreen enclosure)

Etrecheck report attached.

any help is appreciated.

Thank you.