To be fair, that doesn't seem unduly convoluted to me. They are doing their due diligence: it looks like you specifically picked the Twitter-is-liable-in-Germany-if-they-get-it-wrong legal option, so they very reasonably give you a questionnaire because they want you to be specific about what you're demanding of their vaguely defined Netzwerkdurchsetzungsgesetz obligations.
Then they got back to you, saying they disagree with your judgement.
That's a lot of "moderation is hard" work and they're doing their job. However much you might disagree with their verdict, they're not hiding reporting functionality or making reports unduly difficult or ignoring reports.
> it looks like you specifically picked the Twitter-is-liable-in-Germany-if-they-get-it-wrong legal option
I don't know what you mean by that. I live in Germany, I used the normal report button, I haven't picked anything special.
In any case, given my experience, I will definitely not use that feature anymore, it's too much effort to just report something that should not be on the platform. The fact that the report button is available and easy to find isn't enough for the platform to self regulate if the rest of the process is broken.
> I used the normal report button, I haven't picked anything special.
When you reported the tweet, you picked the "covered by Netzwerkdurchsetzungsgesetz" option, which means you're demanding that Twitter comply with Netzwerkdurchsetzungsgesetz to act on a violation covered under the German law.
It's clear you live in Germany because Netzwerkdurchsetzungsgesetz reports are only available in Germany, and given that Netzwerkdurchsetzungsgesetz reports have a legally defined scope that only applies in Germany, I'd guess that it's treated differently from reports for regular violations (like "It's suspicious or spam" or "It's abusive or harmful").
Other regular options like the "abusive" one is much shorter and easier than picking out sections of a law.
Then they got back to you, saying they disagree with your judgement.
That's a lot of "moderation is hard" work and they're doing their job. However much you might disagree with their verdict, they're not hiding reporting functionality or making reports unduly difficult or ignoring reports.