It’s a bit murky. Technically not wrong. He does hold a design patent on the c64. The breadbin is what got used but what I have read was another case had been planned that never shipped. I can’t really tell from the drawings in the second link if that’s the OG c64 or this rumoured, phantom c64. Companies will get patents to protect themselves even if they never use them.
¯\_(ツ)_/¯
https://www.linkedin.com/posts/adammossoff_on-this-date-in-i...
And https://retropatents.com/products/commodore-64-patent-print