Comment by jodrellblank

If an honest alien says "we don't want to convert humans to our religion" that means you can have whatever religion you want. If a dishonest alien says it, it might mean "we don't want to convert humans because we are going to kill all humans", it's selectively true - they aren't going to convert us - and leaves us to imagine that we can have our own religion. But it's not the whole truth and we actually won't be able to[1].

An honest "no one will be forced to use Rust in the Kernel" would be exactly what it says. A paltering reading could be "we want to make Rust the only language used in the Kernel but you won't be forced to use it because you can quit". i.e. if you are "literally shoving facts in someone's face" and they don't change then they might think you are not telling the whole truth, or are simply lying about your goals.

[1] https://en.wikipedia.org/wiki/Paltering