The Broken Bottle Makes Irreversibility Visible

The bottle is broken so that a city that cannot be made whole is seen

Then shalt thou break the bottle in the sight of the men that go with thee, And shalt say unto them, Thus saith the LORD of hosts; Even so will I break this people and this city, as one breaketh a potter's vessel, that cannot be made whole again: and they shall bury them in Tophet, till there be no place to bury. Thus will I do unto this place, saith the LORD, and to the inhabitants thereof, and even make this city as Tophet: And the houses of Jerusalem, and the houses of the kings of Judah, shall be defiled as the place of Tophet, because of all the houses upon whose roofs they have burned incense unto all the host of heaven, and have poured out drink offerings unto other gods.

Breaking an object is an exceptional sign, not permission to destroy property, threaten people, or declare anyone beyond repair today. 'Cannot be made whole again' is this city's announced break, not a doctrine that persons are unredeemable.

From Topheth Jeremiah repeats the warning in the temple court

Then came Jeremiah from Tophet, whither the LORD had sent him to prophesy; and he stood in the court of the LORD's house; and said to all the people, Thus saith the LORD of hosts, the God of Israel; Behold, I will bring upon this city and upon all her towns all the evil that I have pronounced against it, because they have hardened their necks, that they might not hear my words.

The court speech brings the valley word into the house. Hardened necks explain the announced evil. The movement from sign to public court is still speech, not a riot, and not a license to smash a sanctuary.