I question the basis of the reaction and find it wanting. Paraphrasing now; "50 filesystems won't be instantaneously converted to Rust." Has anyone, anywhere suggested such a thing? I don't think anyone credible has done so. A strawman argument. The accusation of some forced conversion to a new "religion" is also baseless, not to mention insulting.

An aside: the get_or_create_inode method example that was left on the display for nearly half the presentation is very compelling to me. It is explicit and comprehensive: one can trivially comprehend both the likely implementation of the method and the obligations of the caller without reading a line of code beyond that declaration. Practically self documenting and vastly superior to conventional systems programming C. At one point a speaker likened this to Java, I suppose because of the type composition. That's ignorant and false: that signature conveys so much more value than what one sees in typical Java code that it's not in the same ballpark at all. The verbosity has actual value.

Rust is great; a legitimate advance in systems languages. People are compelled by it. That has produced some conflict. Not all conflict is avoidable or inherently evil. The C side of this conflict will need better tactics if they're not going to just devolve into irrationality with false claims, baseless accusations and hysteria.