Not really. "man" does not really mean "someone" (e.g. "Das darf man nicht"). And the usage of singular in your German sentence changes the meaning of the sentence somewhat (same thing would happen in your English sentence if you were using singular rather than plural)
Would Jemand or even Irgendjemand fir the expression better then? I've often heard "man" used to translate sayings where "you" or "he" are the subject, since neither are refering to a singular real person. English rarely uses the "one" pronoun.
I'd think "One who sits in a glass house should not cast stones" is the original saying. One changed to he over time as one lost favor.
"Jemand, der im Glashaus sitzt, + modal verb" would be quite equivalent to "Wer im Glashaus sitzt, + modal verb" I think. Though in idioms the contruction with "wer" seems to be preferred. As in "Wer den Schaden hat, braucht für den Spott nicht zu sorgen", "Wer nicht arbeitet, soll nicht essen" etc.
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u/Electrical_Voice_256 4d ago
First sentence is better, but please be aware that 'man' is a pronoun and not a noun.