Uh oh. Are you advocating throwing out the entire Old Testament because certain dietary laws are no longer applicable to followers of Christ?
Not at all, there is benefit to the OT, however you are using or rather misusing one verse on dominion and applying it to social mores. That is not the context or the meaning.
If you want to claim the WHOLE OT is applicable (and I gave you more than just dietary laws) based on the fact Jesus observed them or quoted them then you have to follow the entire OT. You are picking and choosing. I was just pointing out your hypocrisy.