It's a vague number but one that carries an excessively specific demand that I'd challenge anyone to honestly admit happened "just by happy accident". Even us veterans.
Was dead easy for me - my general gameplay for a lot of 1.1 and 1.3 was a lot of time going from place to place "ooh, I should see all the superpower capitals" or "that white dwarf system over there looks interesting", in a 15-20LY range ship (and often using economic routing anyway to see more places along the way), always trading something from one hop to the next.
I don't know what I'd have been on by the time 2.1 released but it would have been
way over 50. Probably over 500.
(Thinking about it, I've definitely traded at 50 different markets
in the last week because I'm still doing much the same thing, really)
ABA routes are for people actually trying to make money from the thing, rather than wandering around vaguely doing stuff because that's what they did in FFE and Oolite and why not start with something comfortable. So I quite like Cheung for being a huge barrier to min-maxers and virtually unnoticeable to casual wanderers. "Visit 50 systems, do some trading while you're there, maybe shoot something or run a mission..." that's the game, isn't it? [1]
The only invitation requirements I didn't meet before finding out the engineer existed were Lori Jameson (didn't get to Dangerous until after I'd moved to Colonia, but since she's in Shinrarta anyway and only has marginally useful blueprints, clearly intended to be the "final one") and Selene Jean, because mining had been so dull in FFE and Oolite, and pre-collectors was much the same in Elite, so it'd never occurred to me to try. Once prodded in that direction the 500t was pretty quick, though. Palin I did get slightly lucky with in that I didn't get around to doing Qwent until
after the Crab Nebula Expedition (7kLY), and if I'd rushed all the engineers on their release I'd have hit that requirement too.
[1] Much of my culture shock over the years has basically been discovering that I think that's the game, Frontier more-or-less thinks that's the game, and huge numbers of players treat it as a speed-run optimisation challenge regardless
I'm surprised so many just seem against the idea that these tasks could be made more interesting?
Definitely no arguments there: none of them are particularly interesting, a proper short mission themed to the engineer would be a lot better. It's one of those places where a "single player plot mission that everyone gets to do once" in the MMO tropes wouldn't actually be out of place with the rest of Elite Dangerous, and they could give out plot and lore background at the same time.
Ironically of course that sort of thing would probably be
even slower for min-maxers or people trying to speed-level their alts. But that's fine with me.
(They'd have to let people who've already unlocked the engineers take the mission - perhaps in exchange for one free maxed module of their choice? - so the rest of us got to have the fun too, of course)