1) irons require 3, but optics require 2, unless you don't have a specific target you're shooting at. And focal planes are not the only or even primary determining factor for speed
2) true of red dots, not optics in general. Even 1x prisms cause some inattentive people to get lost in the tube. Anything over 1x is absolutely more likely to compromise awareness of surroundings than irons.
3)size of the aiming point is not the only factor in precision. If you're using the whole front sight post to hit a man sized target at 500m, someone did you dirty in training.
4)fair-ish. Irons are still very usable in low light, but no light, absolutely correct.
5)in theory many optics work with NV. In practice, you have to have trained and specifically set up the whole rifle and NVG to work like that, and even then most will still prefer to run a peq.
And all of that only applies to irons vs red dots. Throw in LPVOs and other magnified glass and it's a whole different speed vs precision ballgame. I'm not saying irons are better. I'm saying they have a place, especially in training.
