Christoph is an engineer and has been for a long time. There are probably considerations he is making that you either cannot or are refusing to fathom. He’s clearly not against rust in general, just in mixing languages in one codebase.
To be clear though, I personally don’t have a horse in this race, I am speaking somewhat as an outside observer, so i gain nothing from you getting your way or Christoph his.
Stop and think without attributing malice to why someone in his position would make the statements and decisions he’s making. He’s not an idiot.
Deemed by who though?