>>10580859Someone can go into greater details, but CMLL is the WWE of wrestling in Mexico. Traditionally they pushed the old farts, the Hogans and Flairs and Nashes of Mexican wrestling and treated young wrestlers as disposable jobbers for the top guys, who never lose and who stay in the main event and where unless you were a nepo-baby, you were either a jobber, a jobber to the stars, or if you were lucky, a midcard sap who no matter how over you get, would never get a main event push unless it was forth explicit purpose of letting one of the old farts beat you in humiliating fashion and drain your overness out of you like a vampire to "put you in your place".
So in the early 90s, there was a huge revolt and one of CMLL's bookers who was tired of dealing with the old fart Mexican wrestlers hanging on past their prime ragequit and started his own promotion. And took about 90% of the CMLL roster with them, as far as the entire undercard of young wrestlers and midcard guys who were tired of being buried in favor of the old farts and their nepo babies, to start AAA. Leaving CMLL pretty much crippled as all they had left was the old fart Luchadores, their nepo-babies, and a small handful of rookies who weren't good enough to be picked to go to AAA and a couple of midcarders who were stooges for the old farts. Even worse, AAA quickly scored a promotional partnership with WCW, though it had it's own drawbacks as Eric Bischoff stole multiple top guys from AAA, most notably Konan, Eddie Guerrero (who while a nepo baby himself, was trapped in the midcard because his parents weren't in with the clique that ruled CMLL), among others.
CMLL never forgave AAA for damn near running them out of business in the 90s and from the beginning of the feud between promotions, CMLL had standing policy to blackball talent from ever working for CMLL if you worked for AAA in any capacity let alone work for any CMLL affiliated foreign wrestling compan if you ever worked for AAA.