Context, context, context.
The context defines the dispute between Jesus and the Pharisees as concerning "spiritual defilement" - not dietary restrictions. The Pharisees of the day taught spiritual defilement was both caused and cured by our own actions and scoffed when Jesus and company disregarded their ridiculous "spiritual cleansing" by ridiculous hand washing rules.
Jesus clarified that "spiritual defilement" is a disease of the heart that can't be cured by anyone except the Great Physician.
The above context also shows that you no longer have an excuse to disregard God's warning in Isaiah 66 about what He intends to do to those who defile themselves with abominable things like pork, bro.
You can't be more wrong.
Isaiah was a warning to teh nation of Israel not to the church. If you wish to follow that Mosaic Law, you have bound yourself to all 613 as is written.
And I do not think that Jesus was speaking of anything spiritual. Rea carefully what God the Son has to say:
Matthew 15:17-18
King James Version
17 Do not ye yet understand, that whatsoever entereth in at the mouth goeth into the belly, and is cast out into the draught?
18 But those things which proceed out of the mouth come forth from the heart; and they defile the man.
Look closely at verse 17 "whatesoever entereth in at the mouth goes into the belly and out the behind! Pork enters the mouth, goes into the belly and out the behind!
Verse 18: it is the things out of the mouth that defile a person for they come out of the heart.
Jesus explains this further in the Mark parallel passage:
Mark 7:18-23
King James Version
18 And he saith unto them, Are ye so without understanding also? Do ye not perceive, that whatsoever thing from without entereth into the man, it cannot defile him;
19 Because it entereth not into his heart, but into the belly, and goeth out into the draught, purging all meats?
20 And he said, That which cometh out of the man, that defileth the man.
21 For from within, out of the heart of men, proceed evil thoughts, adulteries, fornications, murders,
22 Thefts, covetousness, wickedness, deceit, lasciviousness, an evil eye, blasphemy, pride, foolishness:
23 All these evil things come from within, and defile the man.
Verses 18-19 Jesus declares all foods do not defile a man but are purged out the behind!
But the things that come from teh heart defile th eman.
If you wish to not eat pork, that is your liberty, but to judge those that do is legalism and grave sin.
1 Timothy 4:2-4
King James Version
2 Speaking lies in hypocrisy; having their conscience seared with a hot iron;
3 Forbidding to marry, and commanding to abstain from meats, which God hath created to be received with thanksgiving of them which believe and know the truth.
4 For every creature of God is good, and nothing to be refused, if it be received with thanksgiving:
Verse 4-- Is pig a creature of God? If so it is not to be refused if it is received with thanks!
Romans 14
King James Version
14 Him that is weak in the faith receive ye, but not to doubtful disputations.
2 For one believeth that he may eat all things: another, who is weak, eateth herbs.
3 Let not him that eateth despise him that eateth not; and let not him which eateth not judge him that eateth: for God hath received him.
4 Who art thou that judgest another man's servant? to his own master he standeth or falleth. Yea, he shall be holden up: for God is able to make him stand.
While this is between an omnivorous vs vegetarian diet, Paul says one eats all things (pork included). For you to judge one who earts, you are judging Gods servants (if they are a believer) and making yourself an idol.