A user that doesn’t care about licensing is typically called a pirate.
The license literally does not govern the usage of the app. Here’s the first line:
This license grants you the rights, and only the rights, set out below in respect of the source code provided.
Read the entire license (it’s only 32 lines), and you won’t find anything related to using the product, only the code.
This license should only be scary to developers, who might build on the project, and then have it taken away. As a user, your concerns are different, and this license vs the GPL, or any other FOSS, or even source available license, are more-or-less the same. As a user, your primary concerns are probably going to be related to the security and privacy related aspects, and as long as you have access to the source, you can audit it and ensure it meets your standards. If they choose to revoke access to the code, as a user, you’re in the same boat you described - don’t take new versions because you can’t audit them, but you can stay on the old version. They can’t revoke that access with this license, because again, this license literally does not govern usage of the product.
The license literally does not govern the usage of the app. Here’s the first line:
Read the entire license (it’s only 32 lines), and you won’t find anything related to using the product, only the code.
This license should only be scary to developers, who might build on the project, and then have it taken away. As a user, your concerns are different, and this license vs the GPL, or any other FOSS, or even source available license, are more-or-less the same. As a user, your primary concerns are probably going to be related to the security and privacy related aspects, and as long as you have access to the source, you can audit it and ensure it meets your standards. If they choose to revoke access to the code, as a user, you’re in the same boat you described - don’t take new versions because you can’t audit them, but you can stay on the old version. They can’t revoke that access with this license, because again, this license literally does not govern usage of the product.