It’s kind of like Covid... They need to make up new names to make it sound scarier.
ISIS-K is a new found made up VARIANT of the Taliban, assuming the Taliban is ONLY all Sunni muslims, and the ISIS-K an offshoot of them— their being very few if any Shiite muslims in Afghanistan, but the see eye ehhh says they are 25% shia— and they invented the ISIS-K to describe them. Convenient.
Taliban is puritanical islam in practice, puritanical against shia as well. There may be a way to come up with someone other than our “pals” the Taliban as doing this... but cannot believe it to say it is shiite. Nice neat and not believable.