You've got to quit exaggerating.
I "fly to live" some % of the time, am not an idiot, and I've never come close to 20/1 on the K/D ratio.
I don't think I've ever seen anyone actually posting a 20 K/D, unless it was Zazen once.
In AW once I had 587 kills w/ 3 deaths for an entire camp. Two deaths were augers that gave no kill credit and 1 was to a bomber gunship (w/ 5 human gunners). I don't care how "timid" you fly or how choosy you are in your engagements, especially, if like myself, you do not vulch. That was no easy accomplishment. My goal was always a deathless camp, which I was never able to achieve, although I was the #1 Ranking Fighter pilot in AWFR for the better part of a decade.
In AW rank was really just a function of points which increased exponentially per kill as you lived consecutively and therefore K/D ratio. In AH on the other hand you have the K/T metric (among others) to use as a counterweight to evaluate the efficacy of a person's K/D. Although K/T is also a reflection of other things, such as the climbrate and speed of your rides, the amount of base defense and CV attack/defense you do, it's also a fair indicator of relative timidity.
For example, Pilot A could post a 100 to 1 K/D ratio but only get 1 K/H. That is not being effective, flying around for an hour to find some poor afk soul then run home to land the pelt is nothing. However, if Pilot B posts a 20 to 1 K/D and gets 8+ K/H, that's HIGHLY effective, top 1-2% calibre of effectiveness. I don't care who's actual fighter rank is higher, Pilot A sucks, Pilot B is great, even though Pilot A has a 500% better K/D ratio. This is especially true if Pilot B gets those figures without vulching or using 262's.
I have been playing the tactical fighter game for as long as I can remember. I can assure you it's not as easy as it looks. In AH you have huge hordes, deadly AA, jets, rockets, HO's , rams, buff formation lazers, runway vulchers, trophy headhunters and gobs of La7 drivers that linger around the periphery of a fight just looking for you to be rtb bingo ammo/gas so they can try to run you down. Most of that was nonexistent in the AW era.
There's an incredible amount of skill required to post something like a 20/1 K/D with an 8+ K/T without vulching or resorting to buff hunting with jets. Anyone who tells you differently has never tried it, is lying and/or is completely clueless. By my count there's maybe 20 people in the game right now that I feel confident have the SA, gunnery, flying skill and the all important mental tactical discipline to perform at that level of effectiveness, if they chose to do so, without the benefit of vulching or using jets.