Hellwig could have been more tactful, but like it or not, arguments against a cross-language codebase have merit. Framing it as a ‘clear confession of sabotage of the r4l project’, attempting to weaponize the CoC, and trying to drum up an army via social media was all out of line.

When a maintainer calls somebody's efforts "cancer" -- "spreading this cancer to core subsystems" -- and that they'll do everything they can to halt those efforts -- "I will do everything I can do to stop this" -- that's as clear an indication of sabotage as you will ever get.