I don't think that was his argument. The argument presented by Ellis and others on this forum is that Disney's free speech rights (as granted by the U.S. constitution) were violated by the state of Florida by stripping Disney of the RCID because of Disney's objection to the parental rights bill.
Klavan retorts that Disney is acting as a corporation and enjoys special rights and privileges bestowed upon it by the government, which no individual can possibly enjoy, and no individual or company is especially entitled to. Therefore, the legislature stripping Disney of rights no individual can enjoy, and certainly that Disney (nor any company) is not entitled to under law, is not an issue.
This is different than, let's say, the state of Florida denying a state sales and use tax exemption to a non-profit which meets all criteria established by statute because the party in control of the state government found the organization's political positions to be unsavory. This organization, since it meets all criteria, is entitled to a state tax exemption; Disney and no other company/entity is entitled to a special district
For the record, I still fall on the side of the argument that Ellis presented, but I respect Klavan's argument and found it thought-provoking.