They are valid sources for "Kirk was prosecuted
by JAG in episode
''foo''"
Agreed.
They are not valid sources for "Military law is
influenced by the
actual Uniform Code of Military Justice (UCMJ)" based on comparing the
code as described in the cited episode with the UCMJ,
Agreed.
Or for "One aspect of Starfleet legal procedure
which is hardly
explored is the concept of Captain's Mast. Only on two occasions, over
a 30 year period, is a brief mention made of this and then, only in
action and not by name."
I'm not sure on that one. It's borderline.
Or indeed "Dialogue reveals that a court-martial
may be convened in
the absence of any JAG officers by three presiding command-level
officers".
That sounds fine to me. If something is specifically stated in an
episode, then it can be used in the article with the episode as a
primary source.
Memory Alpha loves this kind of thing, apparently. I
think we could
safely leave it to them...
We have completely different aims to Memory Alpha, there's not point
even comparing.