Thats the point of M+. That is why there is a timer.
The game rewards you by finishing it as fast as possible. Like 3 chesting it, giving you more currency if timed… more gear…
What is the surprise here?
But if you don’t like it, there are other forms of constant that are not “finish as fast as possible”. For example, raids and PvP…
In the context of M+.
In order to get invited into keys, you need rio and gear. And you dont want to be left behind.
Let me explain:
When a new patch releases, we are all on equal grounds. Everyone has ~ the same ilvl. Everyone has the same Rio (zero)…
The “early birds” get that mythic level vault first. They get their tier set first. They get hero 6/6 gear first…
And those people are at an advantage. You get insta-invited into groups.
You also increase rio very fast. And you are above and beyond what most people have 1 or 2 weeks into the patch.
So you are invited into keys really fast, you do a lot of dungeons really quickly. Especially because you are doing it with people that are gearing up for Mythic Raid, last season pushers, ect… People with skill…
So you complete the dungeons better…
Fast forward a couple of months, and those people are doing +15s. If you are left behind, you are kind of stuck.
And if you did not take advantage of the “early push” you are really, really stuck doing +10s and its a grueling process to get more Rio…
And especially because there are simply less people to play. Mythic raiders have all the gear they want, so they dont do keys. Key pushers have acquired what they want (TPs of +10, or whatever RIO)… So there are very few people left…
And those that are left usually have less quality…
Thats the explanation.
And by the way, it has nothing to do with people, the game, or the community.
Its how the universe works in general. There are plenty of RL examples of this type of behavior.