Wouldn't it be possible to minimize signaling given the same level of dispassionate discussion? That is, discourage use of highly emotionally charged/exosemantically heavy words/phrases if a less charged equivalent exists or can be coined and defined.

Say if you have a word X that means Y plus emotional connotation α and thede/memeplex/identity signaling effect β (not that emotional connotation is detached from the thedish/political/identity-wise context of the reader, of course), there's really no reason to use X instead of Y in dispassionate discussion. To give a concrete example, there's no reason to use 'sluttiness' (denotatively equivalent to 'sexual promiscuity' but carrying a generally negative connotational load, signaling against certain memeplexes/political positions/identities (though ideally readers here would read past the signaling load/repress the negative emotional response), and signaling identification with other positions/identities) instead of 'sexual promiscuity', which means the same thing but sheds all the emotional and thedish/tribal/whatever baggage.

(That shouldn't be read as an endorsement of the reasoning toward the same conclusion in the post, of course.)