Humanism often 'goes for a certain type of behavior though,
Torturing other humans for example, is not seen as very 'humane, I think.
Even if the torturer and torturee are human.
Course one could argue Humanism is about 'maximizing Humans,
But again, I think them mean maximizing in a 'specific way.
Just having kids isn't what people think of with Humanism, I think.
Humanism is usually about maximizing what some people see as 'good 'for humans.
Happiness, basic necessities, kindness.
. . .
But as you say,
"Everyone is a human first and a theist second."
While I think I agree with that,
It doesn't really allow Humanism much room to 'replace other Isims in many peoples minds and lives.
. . .
What I mean by that is, even accounting it as innate and part of all humans,
That feels a bit as it not 'mattering a 'bit in what people 'choose.
. . . All toy cars have wheels,
But kids may prefer the green toy cars, or the toy car with flames.
. . .
Though I suppose if a religion/culture/philosophy was 'missing humanism, people might not follow it.
As a kid might not play with a car lacking wheels.
. . . . .
I don't know, maybe the 'branding sounds unappealing to me,
Such as if 'every Religion called themselves Humanists, rather than their various labels.
. . . They all have ideas of what it 'means to maximize the human experience.
Humanism, feels a bit like calling a movement Kindness.
Seems 'odd to me somehow,
But worked for the Hippies for a time, perhaps. Followers of Peace and Love and whatnot.