Yes, sadly that's "normal". GOG can't be bothered to implement an effective method of age verification. So instead, they use IP-based geo-blocking as a lazy alternative to comply with German youth protection laws.

This, if you look at some of the live action Porn Parodies, they literally use props and names that are from the universe or very closely resemble the universe props. That's fair use
Even so, most companies don't even get pissy if you use their Assets, look at commercial 3D Fanart.
Nintendo is one of the few that sometimes get really idiotic about it.
Not even Steam can be bothered to implement such an idiotic verification. Germany needs to stop living in the 19th well ok.......20th century.

I swear, this place is getting more and more unbearable by the day. It sucks, man. I loved GOG so much and to see them fall so hard is insane.

Bring back Marcin Iwinski.

Depending where you live, there may be no such thing as parody law/free use.

Japan, for example has a very dim view of the idea.
What parts are unberable, and who is Marcin?

The fact that they shovel this garbageware onto the site relentlessly. GOG "curation" means jack crap nowadays and these games prove that.

Marcin was the founder/CEO of CD Projekt. He was pressured out because of Cyberpunk's rushed release (which, itself, was the fault of the investors) and shortly after he left, they started changing all sorts of internal policies. Can't really go further in-depth since it'll inevitably be considered "political" subject matter.

My account is from 2010 ... how old do they think I am ... ?

I'll admit I'm not up to date on my Star Trek porn, but those screen shots scream "we're not even trying."

Granted, they scream that in a technical sense as well, so I guess it's on brand.

Wow! That is some IP usage right there.

The games on GOG (or Steam, for that matter) that you can't see with a German IP, are games that have no USK certificate.

Now: GOG could still present those games to its Germany based customers...but to do so, it would have to either
- implement an age verification system, or
- implement its own (GOG particular) age rating system in lieu of the USK rating (like Steam did for many (not all yet) of these cases).

But GOG has no age verification system, and apparently also no intention to implement one, and -so far- they also haven't bother to implement their own age rating system.

So, a VPN is your best friend, if you want to see/purchase these games.
These are totally legal for German users/customers to use here on GOG, since the use of VPNs is completely legal in Germany.
So, neither you (by using a VPN), nor GOG (by allowing you access to its site through use of a VPN), is violating German law.

Apart from all that:
Germany is not "censored" (as you stated in your initial post) - it's simply "geo-blocked" (again: in cases where a game has no USK-Certificate).

"Censorship", respectively "being censored", is something completely different.

That statement is partially correct, but not fully.

Yes, parody falls under fair use, that is true.

But what is not true is that parody is an excuse to steal an unlimited amount of another IP's elements without permission.

Fair use has its limits, and the makers of this game are way over those limits.

What do you care?
You don't want to play it anyway.

To boldly...

LOL

Porn, the final frontier :P.

If he actually did that, then it was almost certainly done out of courtesy, rather than anything else, as Parody falls under fair use.

Space Balls mocks many other movies, not just Star Wars. It also mocks Star Trek, Alien, Planet of the Apes, etc, and he was a lot less concerned with changing those. In the case of alien, he even hired the same exact actor who played the first victim of the chest burster in the original Alien, to reprise his role, so he could say "Oh no, not again".

Indeed, even besides live action porn parodies, the early 2000s were full of parody movies, such as Scary Movie series, Superhero Movie, Epic Movie, etc, that barely changed anything, often using the exact likeness and names of various characters.

People just forgot about those and / or got too used to Nintendo being in a constant state of butthurt. While there is a chance that someone could get butthurt enough to take this game down, I doubt it would have come out on both Steam and GOG if that chance was significant.