>>719266091
Eldar are a "glass cannon" army.
They are fast, they hit extremely hard, and their weakness is their low durability.
But 40k is a turn-based game, which means their low durability isn't a big deal when they get to utilize all of their speed and firepower at once with impunity.
Due to this, Eldar have a tendency to be an Alpba Strime army; they'll spend a turn or two getting into position while playing super carefully, and then in a single turn they'll do one bignattack that cripples their opponent, if not outright wiping them off the board wholesale. They then tag objectives with their exceedingly fast units and score points while their opponent tries (and often fails) to salvage the situation.
It's an utterly unfun army to fight as the first turns are spent trying to head off the Alpha Strike, and then when it happens either the Eldar player has won by crippling the enemy, or they're in a completely disadvantaged position where they'll be crippled instead when their opponent shoots back.
Over the years Eldar have constantly had broken rules and ability combos that encourage dickbag moves. Combined with Eldar having awful lore and beung generally unlikeable, this makes it so most Eldar players are hyper-competitive players who just want to rack up easy wins regardless of how little fun their oppinents have, and who will also forfeit games the moment it starts not going their way.