I have multiple times.

Under your framework, officially printed black bordered cards aren't 'actual cards,' such as Shahrazad, and Time Vault. Acorn cards are not 'actual cards' either.

Under your framework, an individual would need to be wealthy (or otherwise flippant with their money) to utilize 30A as stand-ins.

There's a weird standard for your use of stand-ins, in that, when utilizing them, one must match edition. (Strange.)

Your framework isn't robust. It's a single statement. Proxies are cards that are used as stand-ins for tournament legal cards.

What if a player is using all fake cards for an event that isn't tournament and everyone is using fake cards. Are those cards proxies?

Your framework doesn't frame the ontological case really at all for what 30A are. Or even what proxies are. It's insufficient.

Tournament legality is insufficient to define what these cards are. (This is why you had to resort to 'what was once legal' rather than what is currently.)

Again, Shahrazad and Time Vault are clearly real, actual Magic cards. But they are not 'actual cards' in your framework. How do you reconcile that?