Taking this from a Kantian-ish perspective: what would actually happen if many people adopted this policy? From third-person perspective, this policy would translate to: “The proper way to solve ethical problem is to kill those people who take ethics most seriously.” I can imagine some long-term problems with this, such as running out of ethical people rather quickly. If ethics means something else than virtue signaling, it should not be self-defeating.
Taking this from a Kantian-ish perspective: what would actually happen if many people adopted this policy? From third-person perspective, this policy would translate to: “The proper way to solve ethical problem is to kill those people who take ethics most seriously.” I can imagine some long-term problems with this, such as running out of ethical people rather quickly. If ethics means something else than virtue signaling, it should not be self-defeating.