My problem is with the {tlhIngan maH! taHjaj!}..
>From the first time I heard it, I felt that something was off with
that sentence; but I knew that since a specific person wrote it, and
it appears in a star trek too, then no one was going to admit that
there is something not quite right with that sentence.
That sentence was originally {tlhIngan maHtaHjaj!} It's precisely because people *did* point out that it may be a problem to use {-taH} and {-jaj} together that it was reinterpreted as two sentences.
But also:
{wo' ghawran DevtaHjaj!} (toast)
Note that there's something like a century (someone else can do the math) between these political slogans. But clearly, whatever TKD says, at some point it became acceptable for the suffixes {-taH} and {-jaj} to be used together. It may even be that {tlhIngan maH! taHjaj!} was re- or mis- interpreted as {tlhIngan maHtaHjaj!}, which was what made {-taHjaj} acceptable.