I ended up crafting a custom controller like this:
plugin.controllers.user.destroyme = async (ctx) => {
const authUser = ctx.state.user;
if (!authUser) {
return ctx.unauthorized();
}
const user = await getService('user').fetch(authUser.id);
if (!user) {
throw new NotFoundError(`User not found`);
}
const data = await getService('user').remove({ id: authUser.id });
const sanitizedUser = await sanitizeOutput(data, ctx);
ctx.send(sanitizedUser);
};