Did not Hezekiah himself take away ʜɪꜱ high places and ʜɪꜱ altars, and commanded Judah and Jerusalem, saying, ‘Y’all are to worship before one altar and burn incense on it?’
He walked in all the way of Asa his father. He didn’t turn away from it, doing that which was right in YHWH’s eyes. However, the high places were not taken away. The people still sacrificed and burned incense on the high places.
Now the rest of the acts of Manasseh, and his prayer to his God, and the words of the seers who spoke to him in the name of YHWH, the God of Israel, are written among the acts of the kings of Israel.