OK, my take on a TL;DR:

Imagine you need to protect an area of ocean so you fill it with gunships. They all know who they are because they all have the same flag.

When a new threat is discovered (e.g. a virus) what they used to do was create a copies of the virus ships but with all the armaments removed. Those were sailed into the protected area, all flying their Jolly Rogers, and the gunships practised neutralising them. If a fully-armed intruder was later discovered the gunships would know exactly what to do.

With mRNA "vaccines" something different happens. Each gunship is sent instructions on how to make Jolly Rogers. They run up the flags they have made and then they attack each other because they now all look like enemies.