It could be the opposite. Big high resolution multisync CRT monitors had to have fine dot pitch and finely focused beam. However, in lower resolutions the dista

It could be the opposite. Big high resolution multisync CRT monitors had to have fine dot pitch and finely focused beam. However, in lower resolutions the distance between scanlines was more noticeable, as there was limit to how wide and powerful electron beam could be. As for the lowest res CGA/EGA modes, VGA and later adapters simply had to use double scan to output anything decent on the CRT, so it was part of the standard. So people might be trying to mimic running 1987 games on 1997 hardware and not the look of original CGA/EGA/VGA monitors. Recreating some style is an artistic choice altogether anyway, and I think it's better to discuss it this way.