What people preach and what they do often diverge.
Arguably the politically active "religious right" in the US has long since abandoned most everything Jesus had to offer. We still identify them as such.
I call them "anti-Christians" because it's more biblically accurate.
And yes, there are also valid arguments against either one of those points. But to meaningfully engage in such a discussion, one needs to be well-versed in theology - more so than the vast majority of people who self-identify and are normally identified as Christians.
The whole focus on "Trinity" is weird but makes a little more sense if you realize it was originally developed to stand against certain heresies, but later mutated (often re-entering those same heresies again). This one is indeed theological ... or perhaps we need a word that is to theology as historiography is to history.
But this is diverging quite far from this thread.