The whole collection deserves a content warning, but if you enjoy Black Mirror then you'll enjoy these.
I'm not sure what you mean by that. Who needs to be warned and of what?
Thank you for the recommendation though, there's never too much sci-fi to read as far as I'm concerned.
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I don't know that specific series, but Greg Egan thinks ideas further than usual in entertainment, usually ends on a note that's neither down nor up, but nondescript and even nihilistic toward normal-human values, like setting yourself into an endless loop of trivial emotional experience of no more than a few seconds content in re. The author often plays with minds like that. Depending on your make-up, you could interpret the described personas as tortured people, or free, or ... whatever. Somewhat Camus-like. Just with hard sci-fi.
It's not a book to read to cheer yourself up. It's interesting and clever, but I don't feel comfortable unreservedly recommending it to people I don't know. Hence the warning, it's so people who know that they're sensitive to difficult topics, either in general or right now, don't go ploughing in unawares.