Ultimately Linus’ opinion here does not matter in the positive. He can say Rust in kernel is good, but that does not summon the skill and work to make it happen. He can say it’s bad and quash it, at the potential expense of Linux’s future. His position of avoiding an extreme is a pragmatic one. “Let them come if they may, and if they do not it was less a loss for us.”
Start job hunting now. By the sound of it they are one of those PE firms that zombie walk every acquisition into mediocrity.