I am not sure if you replied to the wrong thread, good for you that it works for your needs, but

My point is that GOG did not drop Linux support and instead partnered with another company. Not about the quality of the software.

1. Gog waning Linux support is completely unrelated to Heroic
2. Gog did not seek partnership
3. Heroic devs just applied to a program that anyone can apply to.

That said, it is shady to inject links and not notify it on the release note or change log. I think there was a message on their mastodon at some point, and the implementation crashed for some people with more restrictive firewall on their network, there were some discussions on the issues page of their code repository.

Gog stopped their own linux launcher and instead unofficially partnered

Stop spreading this nonsense.

Heroic added affiliated links to their software that anyone can apply for (without notifying the users at first).

Yes, they released it as a DLC. Escape from Pork Belly.