By convention, discussions about topicality are considered topical.
You didn't think this one through, Kiki.
"Where might it be topical to ask a question about hair spray for rats?"
What if that topicality being discussed has nothing even remotely to do with
the topicality of the newsgroup?
This new-fangled "topicality is topical" is not a convention, but only an
excuse for some regulars to feel they have "immunity" when engaging in extended
debates about why something or someone is off topic. This view is overdue
for being laid to rest.
I've been here longer than most regulars, and all I remember is that at
the height of the topicality policing, there had been kind of agreement that
it's okay to ask about where a question can be posted, if that question is
related to the use of some C dialect in some way (e.g. platform-specific
programming with some C based toolchain).
But I have come to believe that if the question is related to the use of some C
dialect, even to do something platform-specific, then it is actually just fine
in comp.lang.c. Part of why I think this now is the lessening of the traffic,
compared to the "heyday". Lower traffic newsgroups can tolerate more topic
diversity. (As an extreme example. if all of Usenet consisted of only five
people, they would best use only one newsgroup to discuss anything whatsoever,
rather than chasing each other across 10,000 newsgroups in order to maintain a
topicality charade.)
We have come full circle, because if you look at very old archives of
comp.lang.c (or net.lang.c), you will see that once upon a time it was also
more relaxed. The strict topic policing kicked in sometime around the mid to
late 1990's when the daily volume became quite high. (And, furthermore, C had
then been standardized for a number of years, giving some people the excuse
that only what is written up in ISO 9899:1990 is C and nothing else.)