For the kingdom of God is not a matter of eating and drinking but of righteousness and peace and joy in the Holy Spirit.
Romans 14:17 ESV

The Kingdom of Heaven doesn't exist to enforce rules of purity or any rules at all. Rather, the rules exist to aid in the purity of the Kingdom.

This is very similar to Yeshua's statement that the Sabbath was made for man, not man for the Sabbath. We don't exist in order to be obedient and observe rites. We obey God's instructions and we observe rites that God has commanded or that don't violate his commands for the sake of our relationships with him and one another.