It shouldn’t be be required to use a cloud service in order to use a piece of hardware that you bought and paid for.

I’m disturbed seeing so many of the new consumer targeted 3D printers (and so many other products) going in the “cloud required” direction.

I disagree. I think 3D printers don’t need any security because they shouldn’t be accessible directly from the internet.

If you want to 3D print things remotely, you should put your printers on a DMZ and use a piece of software that bridges the DMZ that starts/manages jobs, and hide that behind a VPN and MFA.

As you said, multiple layers of security, but I don’t think 3D printers should be expected to provide any of that, except maybe checksums on print jobs so they don’t print corrupted files. Have hardware vendors focus on making their hardware better, have software vendors focus on making their software better, etc. Once you start expecting hardware vendors to manage security properly, you done goofed.