Sadly looks like people are using AI to create fake videos and spread misinformation about the cartel's power: (Spanish) https://www.sinembargo.mx/4768982/la-muerte-de-el-mencho-moviliza-al-cjng-y-a-los-sicarios-de-las-redes-datos/

The cartels themselves are probably using bot accounts to try to seem more powerful than they really are.

Looks like this Costco was really set on fire though: (Spanish) https://heraldodemexico.com.mx/nacional/2026/2/22/reportan-incendio-en-tienda-costco-de-puerto-vallarta-tras-muerte-de-el-mencho-esto-se-sabe-video-772280.html

Although, not sure if it was "guns-blazing bust-in and set it on fire" vs just some fucking cowards setting shit on fire and then running away.