Now this is where I find the counter arguments get unreasonable. First off, I'll start by saying I've done the grind. I have an Animus, 2 Atma weapons and 7/12 to a third. I know what the grind is and I'm putting in the time as the system stands. However, that does not mean the system is, or ever was, reasonable and that this kind of "grind" is representative of any kind of actual work or effort on anyone's behalf.
People aren't asking to be "spoon fed" anything, they don't want stuff just handed to them. What they want is a reasonable expectation that if they put in x number of hours they will get result y. As it stands right now, gathering Atma is less like work and more like shooting dice. You can take two different people, have them put in the same amount of "effort" (supposedly time in this case) and they may end up with vastly different outcomes. It's not even in the realm of similar return rate for effort put in.
Imagine if your job or school worked like that... Complete a task and you get a spin on the wheel, with a tiny sliver of a chance that you'll get that promotion or passing grade, no matter how much work or time you put in. No one would accept that, but somehow "it's just a game" makes it fine for people who may have more free time to invest into that game to tell anyone else who doesn't that they should "suck it up and stop whining".
When the system actually rewards effort (which by the by is something that requires skill, not just time and blind luck), then maybe the complaints will stop. But don't think that people who want the system made into something reasonable are just being lazy because they don't have the time to devote every day that you might.
-Edit-
Oh, as an aside since I know it'll be brought up... raids and raid gear as well as the RNG there are a completely separate animal and issue. Raids require skill to complete and I believe rewards there should be in line with that even if they are still a form of shooting dice in the long run, it's expected that if you're running static raids that eventually you will get the drop.