Right, for the ones that are themselves also Kanji, I'd say don't worry about memorizing them as specific radicals. Do think of other names for them if it helps.

The card you showed is blue and says 'radical' under it, you probably have another later in the deck that's pink and says Kanji. Might be worth deleting this blue one instead of editing it.

I didn't realize the 'death star' one had any actual meaning. Heisig or someone on Kohii calls it a butcher's convention and I've just stuck with that.

I never have learned much about actual "radicals" though. I think it's like, this technical term used for something different than sub-components that I look at and think about so far.