Does anyone know what regulatory constraints of gpl3 this is referring to?

https://lwn.net/Articles/1001013/

> Apertis relies on the Debian Free Software Guidelines to ensure all software shipped is open source or, in limited cases, at least freely distributable. However, for some customers this is not enough to be able to adopt OSS solutions as in their evaluations some provisions in common licenses like the GPL-3 are at odds with regulatory constraints they are subject to. Apertis does not set to solve this decades-long debate, and instead its goal is to increase the adoption of modern, maintained OSS solutions in markets where this has historically been a challenge. To enable this, Apertis supports avoiding the use of any software under some licenses (like the [GPL v3.0 license family) on target images, while still making them fully available for development and for customers that do not share those licensing concerns. To avoid these licenses, Apertis uses more modern alternatives instead of relying on outdated and unmaintained pre-GPL-3 versions. For instance, coreutils and findutils (GPL-3+) are replaced in Apertis by rust-coreutils and rust-findutils.