I don't agree with you, and don't see the point of this rant...
You act like this was a singular case and it is justified because "its a big company", but easter eggs and references are common in this industry, and only because WB is being sued now, its legitimate?
For example:
- Guacamelee was released recently and had dozens (if not hundreds) of references to sites, memes, other games and public domain jokes, some of them for famously unfriendly companies in terms of sharing their IPs (like Nintendo).. but I don't think they contacted any of the copyrighted material owners, so they are liable to be sued.
- Borderlands and (especially) Borderlands 2 had a lot of the writing being derivative of memes, internet jokes or catchphrases from TV shows (like having a character spew "cool story, bro" every few seconds), so that should make Gearbox and its writers huge targets for lawsuits. They even included the dancing alien from spaceballs (itself a reference to, gasp, WB's Michigan Frog) in Colonial Marines, so Mel Brooks should sue them.
- Bethesda included a reference to Minecraft (the Notch Pickaxe) in Skyrim. Given their less than amicable relation (Bethesda suing Notch for the use of the copyrighted word "scrolls"), I doubt they were given permission... So, I guess Notch should sue them for it.
Those are just some examples, from the top of my head, or other possibly dozens more... each one having about the same validity than this case. Yet, since this is 7th Cell (a big developer) and they are just poor guys who want to profit of their totally original creations, this is different? No, this is not different. This is like Tim Langdell (a small guy) suing EA and Namco (big corporations)... how did that ended up?