It doesn't matter if the snuff is an Israeli shooting a Palestinian, or a jihadi beheading a cartoonist. It's all removed because YouTube doesn't accept snuff on its platform.
Technically, “snuff” is usually defined as at least being made for entertainment (I say “usually”, since commonly other requirements are added as well). But beheading videos and the like are meant to scare their enemies, not to entertain weirdos on the internet. So these are not “snuff” videos.
I would think the "for entertainment" is in the eye of the beholder, and the production part is irrelevant. In either case, YouTube has never allowed this stuff.
These were documentaries made by nonprofits, not snuff films. As the article states, they were removed due to sanctions, not for violating YouTube policies.
It doesn't matter if the snuff is an Israeli shooting a Palestinian, or a jihadi beheading a cartoonist. It's all removed because YouTube doesn't accept snuff on its platform.