>>107067450
>Another guy did the same following me doing it
That's me. It wasn't 80 nits peak, I calibrated it to 80 nits. Nevertheless, with the same brightness settings, the brightness has doubled to around 160 nits after warm up. For the record, the monitor is Mitsubishi Diamond Plus 200. It's totally clapped out, it was scratched to shit and had red colour bleeding at semi-high brightness. Removing the anti-glare film got rid of the scratches, as all of them were on the film and not the glass, improved focus because now the tube is driven 50% less to achieve the same desired brightness and eliminated colour bleed, which also affected clarity. As for the downsides, the monitor is now completely useless during daytime, there is no tint and it looks like a black and white TV tube. In a dark room there's no difference other than seeing my reflection sometimes, which happened even with anti-glare, although it was less noticeable. ANSI contrast may be worse but I've yet to measure that.
I wouldn't recommend it in all cases, especially if it's sprayed on instead of a peelable film, I imagine scrubbing that off is both risky and a massive pain in the ass. If you already use your CRT only in dark rooms and especially if it's worn out as hell, I say go ahead and remove the anti-glare. Can always get a sheet of window tint and apply it to the screen, some people had good results with more transmissive tints that let far more light through compared to stock AG while still eliminating some reflections and glare.