You can't go around screaming "your code SUCKS and you need to rewrite it my way NOW" at everyone all the time and expect people to not react negatively.
And it's happening here too. https://news.ycombinator.com/item?id=46048336 makes clear that most of the commentary here is just plain wrong, yet it's not upvoted to top.
If you search for HN posts with C++ in the title from the last year, the top post is about how C++ sucks and Rust is better. The fourth result is a post titled "C++ is an absolute blast" and the comments contain 128 (one hundred and twenty eight) mentions of the word "Rust". It's ridiculous.
(Maybe you mean this in some general sense, but the actual situation at hand doesn't remotely resemble a hostile unaffiliated demand against a project.)
To who is this addressed?
> If you maintain a port without a working Rust toolchain, please ensure it has one within the next 6 months, or sunset the port.
Because that sure reads as a compulsion to me.
It seems you are imagining things and hate people for the things you imagined.
In reality there are situations where during technical discussions some people stand up and with trembling voice start derailing these technical discussions with "arguments" like "you are trying to convince everyone to switch over to the religion". https://youtu.be/WiPp9YEBV0Q?t=1529