Is this statement refering to the speaker in 3rd person?

Yes, this is third person.

Explanation:

In third-person point of view, the author is narrating a story about the characters, referring to them by name, or using the third-person pronouns “he,” “she,” and “they.”

No

Explanation:

its in first person !! in the statement, it says "we". that means the speaker is referring to other people along with themselves ! so since they are included in we, it's 1st person!

the dog listens to mr miller