Few things brighter than an instant Google theologian.
You can look and find many opinions on what that meant. I don't want to type that much. No Christian scholars interpret it as you do.
This is the reason.
It is crystal clear when you read the entire account of his life that is Jesus constantly and publicly disobeying Mosaic Law and then he publicly explains to the Jewish Priests why he does so. It's obvious he sets out to disobey the Jewish laws in a very public fashion.
He then publicly talks to the High Priest (preachers) in brutal ways for enforcing the laws. ( "You snakes! You brood of vipers! How will you escape being condemned to hell"?)
The priest demanded he be executed by the Roman rulers for doing so.
There are literally dozens examples like the the one I will cite.
Mark 7:17-23New International Version (NIV)
After he had left the crowd and entered the house, his disciples asked him about this parable. Are you so dull?” he asked. “Don’t you see that nothing that enters a person from the outside can defile them? For it doesn’t go into their heart but into their stomach, and then out of the body.” (In saying this, Jesus declared all foods clean.)
He went on: “What comes out of a person is what defiles them. For it is from within, out of a person’s heart, that evil thoughts come—sexual immorality, theft, murder, adultery, greed, malice, deceit, lewdness, envy, slander, arrogance and folly. All these evils come from inside and defile a person.”