No argument. The effectiveness of a display is affected by refresh rate, input lag, and change response time. The last is where an OLED EFV would have no issues. The first two can cause problems. The likely issue with any EFV would be input lag, if it's not sufficiently low. Given that the data has to be encoded, moved, and redisplayed, the electronics would need to be very, very fast.The human eye cannot tell the difference above about 24 fps, so a refresh threshold of about 42 ms is enough.Not quite. Cinema film shot at 24fps appears fluid to the human eye because it's projected at 48fps with each image shown twice -- as distinct from 48fps like Peter Jackson uses with a full 48 images. If it was actually run at 24fps, you'd have a splitting headache. Some projectors run at 72 images per second.
Regardless, your ability to see flicker isn't really related to your ability to track high speed subjects in the presence of lag.
The sensor too. The theoretical minimum on lag is the shutter period. In good light this can be very short, but then the frame rate and thus processing pipeline has to keep up.
In low light, the shutter speed can be a major problem. When you need 1/15th to get an image for the EVF, your lag is going to be that plus any processing overhead.