I’m also not deeply a grammar person, but in “is about”, “is” is definitely a verb. That’s the part that would conjugate (I am about, you are about, he/she/it is about). So I guess “about” is an adverb modifying the verb; or possibly “is about” in combination is a verb phrase.
I’m also not deeply a grammar person, but in “is about”, “is” is definitely a verb. That’s the part that would conjugate (I am about, you are about, he/she/it is about). So I guess “about” is an adverb modifying the verb; or possibly “is about” in combination is a verb phrase.