The ark in Rev 11:19 refers to the heavenly reality of the earthly physical Ark of the Covenant the Lord instructed the Israelites to build. We know from Hebrews the temple and all of its contents, including the Ark of the Covenant, were shadows of heavenly things, constructed according to the precise pattern God gave Moses.
I use the(Life Application Study) NIV Bible, and the Biblical Scholars/Theologians Commentary at Hebrews 8:4 and 8:5 does not agree with your comments. I am NOT a Biblical Scholar/Theologian, so therefore I cannot argue about Scripture.
If you wish to know what they said it is best to read it for yourself, if you do not have NIV/ a Christian bookstore will have one to look NIV Commentary under those scriptures, if you are interested.
I will pray and ask God to make sure I understand his comments on the subject, and that may take some time. I do daily reading/study of the Word of God/Prayer. Thanks for the reference/comments. This will be an interesting study.