Funny how they have a separate page for that.

They could have had those two games permanent on GOG Connect, as an example.

I presume you always get a product key for those games when you buy at Steam?

Funny how they don't exist on the Reclaim Your Game page either.

Lead by example says the Universe.

Yeah, it's a promotional tool and it requires specific co-operation from the devs of the games involved which is why it can't be a "blanket" thing for every game common to both stores.

Witcher backup is way older than Connect.