> I'm still using high end CRTs for all use case

Buried the key sentence. That's pretty wild. Isn't any CRT now 20+ years old and consequently a small fraction of its design brightness? Or do you have old stock and you open a fresh box every 5 years?

I know there wasn't a lot of old stock of CRTs are the end of the CRT era because when I needed a warranty fix on a Sony 21" Trinitron FD in the final year of its 5-year warranty they said they could not repair or replace it and they send me a 24" model instead. When that one broke they could not fix or replace and paid me out for the warranty.