Got you, but I don't think we should disregard the possibility that this was simply a sectarian attack from a bunch of religious loons. The rush to label it some kind of conspiracy is tedious but to be expected on this site unfortunately.
ISIS claim they were targeting a gathering of Christians
View: https://twitter.com/sentdefender/status/1771286397338456079?ref_src=twsrc%5Egoogle%7Ctwcamp%5Eserp%7Ctwgr%5Etweet
Islamic State have claimed responsibility
https://www.theguardian.com/world/live/2024/mar/22/moscow-concert-attack-crocus-city-hall-shooting-russia-live-updates