Doch[0], never limit yourself to a single example.
I grew up in the UK, where teachers at the time were banned by law from saying it was OK to be gay:
> "shall not intentionally promote homosexuality or publish material with the intention of promoting homosexuality" or "promote the teaching in any maintained school of the acceptability of homosexuality as a pretended family relationship"
And there are socially taboo topics today. I suspect even mentioning some of them here might create a flame war and annoy dang, so I won't.
Instead I'll point to drug references in films and TV, where weed was for a long time as taboo as LSD and heroin; and that in Anglosphere media, sex is more taboo than violence ("Straight up murder? Put that in a kid's film. Nipples, on mammary glands, the defining characteristic of mammals and a thing that infants have a biological imperative to stick into their mouths in order to not starve to death before the invention of fake ones on milk bottles? Banned for being too sexual.")
Despite these examples of mistakes when restricting speech, I am not a free speech absolutist. This is because I'm not an anything absolutist: there are limits to all things, finding the true boundaries isn't as trivial to pointing out the first two examples that come to mind, if that's one on either side saying the standard is half way between them, if they're on the same side rejecting the possibility of the other.
[0] a German word that should exist in English: to be used to deny a negative, where "yes" or "no" might be ambiguous.
I don't think "doch" is particularly fitting, because the GP did not make a negative statement (rather a positive one about not looking further than some limit). Its usage felt weird to me as a response to the GP.
I guess for German speakers it fits in to more places. As a non-German speaker, at home I use it to express agreement with a statement where saying "yes" or "no" would be ambiguous.
I grew up in the UK, where teachers at the time were banned by law from saying it was OK to be gay:
> "shall not intentionally promote homosexuality or publish material with the intention of promoting homosexuality" or "promote the teaching in any maintained school of the acceptability of homosexuality as a pretended family relationship"
- https://en.wikipedia.org/wiki/Section_28
And there are socially taboo topics today. I suspect even mentioning some of them here might create a flame war and annoy dang, so I won't.
Instead I'll point to drug references in films and TV, where weed was for a long time as taboo as LSD and heroin; and that in Anglosphere media, sex is more taboo than violence ("Straight up murder? Put that in a kid's film. Nipples, on mammary glands, the defining characteristic of mammals and a thing that infants have a biological imperative to stick into their mouths in order to not starve to death before the invention of fake ones on milk bottles? Banned for being too sexual.")
Despite these examples of mistakes when restricting speech, I am not a free speech absolutist. This is because I'm not an anything absolutist: there are limits to all things, finding the true boundaries isn't as trivial to pointing out the first two examples that come to mind, if that's one on either side saying the standard is half way between them, if they're on the same side rejecting the possibility of the other.
[0] a German word that should exist in English: to be used to deny a negative, where "yes" or "no" might be ambiguous.