My room is absolutely RGB'd out, even my speakers, keyboard mouse and surrounding all my monitors and TV.. guess what, after 2 years they can still display a perfect white at absolute peak brightness.
I also think you're missing the point,
if the LED dies it should be warrantable as there are no instructions/disclaimers to not run them at peak brightness otherwise. I get you maybe an expert at making your fan lights last however you as a consumer shouldn't have to work around poor quality components and design especially when they are charging you for a product marketed as being premium and highly customizable. If you're saying this is a limitation of all RGBs I also get that but this shouldn't make the issue non-warrantable, it has nothing to do with being "lucky" and has everything to do with your rights as a paying customer.
Let me make this easier for you: You know if you run your car at 100% throttle all the time there is a good chance the engine will sh*t itself much earlier than designed? This is why your tachometer has a red-line, to let you know if what you're doing is outside of spec/design and this RPM limit varies for the type of car you drive. Figuratively speaking there are no "red-lines" for the RGBs in your PC components and could even be used as a loophole to replace your components.
I hope you're not working in the warranty field.
PS: 30 seconds of physical energy is too much to spare nowadays just to help some stranger online prove a point.