If you want to reach the top of the mountain, you have to climb. You can’t stand at the bottom and demand someone installs an elevator.
The system was specifically created for players who enjoy this process. If you do not, then it was not made for you.
It seems that a more fitting analogy would be:
If you want to reach the top of the mountain you have to climb half way up it. Then run around the world doing tedious, mind numbingly boring, and entirely unrelated tasks in order to build a climbing exoskeleton to finish your assent.
The problem is that the process of getting high levels of Agony Resistance has nothing at all to do with the process that uses Agony Resistance. AR works extremely well, until you start to reach the high levels of it. You get enough Pristine Fractal Relics while learning the maps on the tier 0 fractals that you are able to easily negate the tier 1 agony with a ring or two. You get enough Relics from running through tier 0 and 1 fractals to have a back piece before you hit teir 2. Throw some other trinkets that you get from running stuff with your guild or just from Laurels and you have the 25 AR needed for their 2 just from the two rings and back piece you are handed along with two other trinkets that are easily acquirable. Running the tier 2 Fractals will likely give you an Infused ring drop or two. You will also get what you need in order to infuse your back piece. Stick the still easily acquirable +5 Agony Infusions in them, maybe get your sixth trinket, and you are all set for Tier 3. You have a very nice, smooth transition that occurs naturally as you progress your character. Getting to Tier 4 is slightly more of a bump, but still nothing at all unreasonable.
It is easily possible to reach full ascended equipment within two or three months. This provides you with slots for 70 AR. Additional 10 or 20 AR you can get with AR infusions in the same period of time. Fractals are a perfect “Friedhof” for your gold and your time like many vertical progression systems if you want to go for the highest limit.
‘Easily possible’ is a matter of opinion. To me, it is not easy to remain awake while checking gw2stuff for world boss spawns, then tediously and mind numbingly auto attacking with a massive zerg of people in order to get the ascended materials needed. Likewise, unless you already have a massive abundance of accumulated wealth setting around you will be farming champion trains or doing dungeon speed runs in order to finance the ascended crafting process. Not to mention the daily Laural grind.
If progression required doing challenging, exciting content I would absolutely love it. Until you get to the Tier 5 Agony Resistance progression, they do just that. But instead, in order to ‘progress’ you are forced to go back and grind grind grind away at extremely boring and ridiculously tedious content in order to either finance the very high +value Agony Infusions or else do even more of the boring content so you can dump wealth into Ascended Crafting.