Most groups have their little spins on words and meanings that they use to identify people in the "in" group. It's an old idea (the shibboleth.) Since everything is on the internet, we can also be aware of the code phrases used by the groups that are already known to be "the enemy."
"The enemy" in this case are groups that are diametrically opposed to us philosophically or who deny our right to existence. African Americans and Jews are, for instance, can be completely aware of the code-words the KKK uses to talk about them.
Because dames don't like it when you call them broads.
"Female" is for genitals, animal husbandry, and USB cables. Human beings in a social setting are "women". It's just manners.
And it's been manners for a long-ass time. Back in the '80s when the Ferengi in Star Trek: TNG were introduced and they referred to the Enterprise-D crew as "females" it was supposed to be jarring and dehumanizing. That was the point.
It doesn't help that the incel crowd is so firmly in the "female" camp - they define women by their sexual role (as THEY define it) and promote the idea that they're NPCs or whatever - a prize to be won, devoid of will or self-determination.
It's usually a good idea to be visibly doing the opposite of whatever incels do.
Because "forgiveness" is frequently used as a bludgeon by people who don't want to respect the distinction between forgiveness and forgetfulness. (You OWE me forgiveness, as I define it, otherwise you're a bad person, therefore you shouldn't hold my past actions against me or treat me different after I've wronged you, otherwise you're a hypocrite!)
Most people, regardless of their belief system, or how internally consistent it is (or isn't) don't really like being lectured to about what they do or do not believe based on other peoples' understanding (or willful misunderstanding) of a certain label.
Within their community, Christians will discuss forgiveness, but they'll frame it in the larger context of a sin, a sinner, contrition, penance, restitution, etc., and what the obligations are of the forgiver and forgivee. If you're jumping straight to forgiveness, you're probably up to something.
Well, we do get called "evil" a lot, by folks who profess to believe that we are incapable of moral or ethical behavior, lying about our lack of faith, worship Satan, are bound and determined to kill or rape somebody if we ever get the opportunity, or are literally demonic, because we don't believe as they do.
It gets tiresome.
People who aren't interested in writing nonbelievers off as Satan's Literal Spawn and a Blight Upon Christendom And Western Civilization Which Must Be Expunged aren't usually leading with the term.