If you interpret "property is violence" to mean that property is maintained by organizations willing to use violence - I.e. That something is "my property" because I can appeal to a police system who will help me defend, retain, or regain possession of it, then that's obviously true. I expect nobody disagrees with that. If that is the interpretation you're trying to defend then I have no objection beyond an arched eyebrow at something trivial being obfuscated to appear objectionable.

The interpretation I made, and challenged, is that property is violence. I.e. Owning things is violent towards other people.