I'm not sure what the hide-own-stars is supposed to do (it was enabled by default), I understood it as setting that hides people who star their own repositories. If it is, it doesn't work for me (see below). Otherwise, I think it would be a great option to add, I don't think anybody needs to see this.
My settings:

My feed:

I understood it as setting that hides people who star their own repositories
No, it hides people that star your repos.
I don't think anybody needs to see this.
Awkward 馃槤
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_Before you love others, you must learn to love yourself._
I can suggest renaming it to hide-stars-to-current-user-repos
No, it hides people that star your repos.
What is the sense of this?
@ShalokShalom I'm pretty sure it's because big open source guys like @sindresorhus get so many stars on their repositories every day that they fill up their feed making more important events harder to find. I've disabled the feature because I don't get a lot of stars, so an occasional someone has starred whatever item in my feed doesn't clutter it.
What is the sense of this?
Because seeing who starred your repos doesn't provide any practical value. It's just noise.
I suggest an explanation below the text input field about all the possible settings, so that everyone can see whats available and what it does.
@ShalokShalom refer to https://github.com/sindresorhus/refined-github/issues/1043#issuecomment-360994160
It's currently not possible. Each file could however have a header comment with a short description
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Conflict of interest detected.
_Before you love others, you must learn to love yourself._