[tnone]

No, signaling in this context is a term referring to conspicuous behavior meant to substitute a difficult to prove characteristic (e.g. being a principled person acting morally) with an easy to perform ritual (e.g. sharing opinions with like-minded followers on Twitter).

Not everyone who dislikes this behavior is alt right, or rightwing at all. Stop focusing on the scape goat that's easy to dislike.