That only certain things were considered extra holy.
Jeremiah 3:16 ESV
And when you have multiplied and increased in the land, in those days, declares the Lord, they shall no more say, The ark of the covenant of the Lord. It shall not come to mind or be remembered or missed; it shall not be made again.
Mary being an 'ark' seems, shall we say, a bit presumptuous.
>> “Mary being an ‘ark’ seems, shall we say, a bit presumptuous” <<
.
‘specially cuz the real one is still here on Earth, in the cavern on the temple mount.