As a quick aside, “them” is an object pronoun, not a subject pronoun. The correct word you needed is “they”.
You couldn’t phrase your original question as a statement “Them have though.” That’s often a quick test for valid English grammar. With the correct pronoun, it makes more sense: “They have though.”
As another example, take this sentence: “Have you seen them though?”
“You” is the subject of that sentence, and “them” is the object.
You couldn’t phrase your original question as a statement “Them have though.” That’s often a quick test for valid English grammar. With the correct pronoun, it makes more sense: “They have though.”
As another example, take this sentence: “Have you seen them though?”
“You” is the subject of that sentence, and “them” is the object.