Nothing wrong with the FS13/17, which that looks to be. From that angle, probably a 36.>>3892114
Looks like they're quoting an old version of something from /r/GloriousCRTMasterRace, which in turn was based off of some /g/ copypasta
Technically, mathematically, those resolutions would all fit into some of the frequency limits for the monitor in question (Iiyama 514Pro) which is in turn a tweaked Mitsubishi 2070SB.
It doesn't take into consideration real world limits in terms of what other components in the monitor can actually take, the maximum vertical refresh the monitor can take(the revised pasta changes this) or as >>3892120
said, that there is no commercially available GPU out there that could actually be expected to keep up with those due to the RAMDAC in said cards staying exactly the same for over a decade.
Or the fact that you wouldn't get any sort of gains from anything past 2048x1536 if not lower due to the limits of the tube itself, specifically the stripe pitch and the actual ability for the gun to actually focus in that well.