Ok since you win the discussion on the precision of the language involved (feel better?) Let's address the main argument. Tell me why you think its ENY is appropriate...explain to me why the yak shouldn't be limited like the other aircraft with similar or worse capabilities? Or you just know better without offering a counterpoint to it's high usage rates and kill ratio.
The Yak-3 is not an uber plane. It sacrifices other characteristics like firepower, ammo, and fuel to achieve benefits in flight performance and small airframe (target). If you look at performance charts plenty of other rides have better WEP speeds at all altitudes.
The main reason you see high kill ratios is there is a particular group of yak-3 fliers who are very timid. They will not engage 1:1 (or 2:1 even). There's a couple who have danger-sensitive internet connections as well.
I still believe the claim of it's hardiness derives from being a small target and people not understanding that a hit sprite might not indicate all 6 or 8 of their 50 cals are hitting. Flying the Yak 9U it's common feedback ("hey I hit you with 8 50's") where the size of the yak vs convergence means only 1 50 cal hit you. Versus guys like Yucca are very good at convergence shooting will rip you apart in a single burst.