I’m not going to directly reply to any of the claims about asset licensing here and will reply on personal title (both since it’s a sensitive subject and you’re threatening with a lawsuit), but first off: your post is full of weird extrapolations.
Let’s take apart your weird tangent about browser engines here:
‘Over 150 contributors’? There’s perhaps around 4-5 FTE worth of people working on the client codebase at most at any given time.
It’s hard to tell where you get this number from, but it’s pertinently false.
The ‘browser engine’ was last updated to Chromium M103 - released June 2022 - in Q4 of 2022. Again, I’m not sure where you’re extrapolating that from or how it’s related to the prior point, but this is also more recent than even an actual company with a multi-billion dollar valuation is using, as they’re still on Chromium M91, released May 2021.
‘Background blur’ is supported fine and the main menu uses exactly that background blur you claim is not supported. However, the implementation of backdrop-filter in Chromium requires an actual layer drawn by Chromium below, the game is not part of this since Chromium is an overlay.
(tl;dr: you’re doing it wrong. using x-cfx-game-view or the WebGL texture trick as seen in screenshot-basic meanwhile will work fine to get backdrop blur atop part of the game. here’s a result from googling ‘fivem backdrop filter’: How to use x-cfx-game-view/CfxTexture? - #3 by liquid)
‘DOM’ not being supported? What?
Since you appear to be talking about browsers (i.e. NUI), do you think the browser would even work at all if DOM wouldn’t be supported?
Similarly, the remainder of your post is equally filled with attempts to sound clever to frame a discussion in a certain way. I do not have any interest in arguing with someone who in their first contact instantly goes and cites ‘lawyers’ and ‘courts’ and other arbitrary nonsense.
Let me rephrase your post in a more friendly and constructive way, as you should have asked it:
Hi! I’m wondering, since this was mentioned quite a while ago, if there has been any progress on supporting JavaScript in NUI for the ‘Asset Escrow’ system. I’m worried about people reselling my code and using it without having a legitimate license, and don’t know if there’s any other way to handle this.
… and we’d have actually replied constructively with an actual answer indicating the actual progress on such, the complexities involved in implementing this (i.e. if this were implemented, it’d be a lot more difficult to ‘update the browser engine’ as you say), but also saying that if you report some server you find improperly using your code, we’d gladly take it down.
Instead, what you posted is more along the lines of the following:
BLAH BLAH YOU SUCK BLAH BLAH WHY ARE YOU FORCING US TO YOUR SHITTY SYSTEM WHEN YOU CAN’T GET ANYTHING DONE. I THINK THIS IS ILLEGAL AND I AM CONTACTING A LAWYER BECAUSE YOU SHOULD STOP RESTRICTING US. YOU’RE OPPRESSING MY FREEDOM OF SPEECH.
LOREM IPSUM DOLOR SIT AMET BROWSER ENGINE. DOM LOCALSTORAGE CONSECETUR NON SEQUITUR CANIS CANEM EDIT LOBORTIS NEQUE EFFICITUR SEM GRAVIDA, VEL FINIBUS NULLA POSUERE. PROIN UT IMPERDIET NEQUE, IN MOLLIS LIGULA VESUVIUS CITRATE. SUSPENDISSE CONSECTETUR LOREM AT VELIT TEMPUS ORNARE.
PLEASE REPLY WITH A LEGALLY VALID AND HELPFUL ANSWER OR ELSE.
… and that is just counterproductive, unnecessarily hostile and… yeah. Not too helpful. 
