>"a full copyright declaration"

A what? In the majority of the World copyright has been automatic for about 140 years.

How you get copyright is you make a work. No need to put anything else on it. IIRC there are about 3 countries that aren't signatories to the Paris Convention.

In USA you can file a notice in order to get better treatment in court, but it's not been required for 40 years or so, is that what you're referring to?

FWIW the license is very clearly MIT, https://github.com/cloudkj/scar/blob/master/LICENSE.

Sorry to nitpick, but copyright declarations are a thing of the past in many nations with copyright protections automatically conveyed upon creation, registration only necessary within a short time after infringement was detected, with registration serving to only maximize the monetary sanction the government will levy on your behalf.

and regarding license, they have the MIT license added to the repository

That's fine, but this is purporting to be a copyright declaration. I know they're unnecessary, but if you are got to add one, you should do it properly.

It is inconsequential