Me: Points out the obvious fact that a monospace terminal renderer requires nothing but a full-screen quad with a pixel shader that fetches glyphs from a coverage atlas. Microsoft:pic.twitter.com/75Kb5fvebL
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Condescension on the internet? Impossible! 
I guess they are looking at the word "emulation" and you are looking at the word "rendering". Both things are quite different. The "rendering" part is probably not the bottleneck.
I tried your benchmark on xterm and it couldn't even reach 2 FPS. But at the same time, xterm is able to display an XServer's screen at more than 2 FPS when using sixel (a different escape code protocol). See:https://www.youtube.com/watch?v=UOTMGdUPYRo …
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