No camera is perfect. Few of us will ever find a view camera that couldn't be improved somehow; I never have and don't expect to.
Were I to use a TK for a while, I'm sure I could find things about it that didn't work for me, or things that could be improved.
I'm also sure that I could enjoy making good photographs with it, just like I have with the many different view cameras I've used and owned over the decades.

But a telling point about the Technikardan is that it has remained in production for over thirty years, while many other designs have come and gone.
That speaks well of both the design (unique as it is) and the build quality.

Not unlike a Porsche 911; German, top quality, expensive, high performance, long track record, unusual design, not for everybody.