just look at how different the time and energy spend on the game is for different people.
some think playing the game for 4+ hours every day is normal, others think more than 6 hours a week is too much.
just take m+ as an example: when the dungeon is new, people learn the strats, routes and tricks in the first weeks. at a certain point, these people are good at the established ways to play a dungeon.
then comes a player that rejoined late in the season. that player makes his own groups, slowly climbing up, and at one point tries his first +10.
and gets immedeatly slammed for not knowing how to play the dungeon that is suddenly played entirely different due to season affix.
is the new guy entitled because he made a group/joined a group for a +10 without much experience, or is the group toxic for complaining about his lack of knowledge?