DelegatingSecurityContextAsyncTaskExecutor without having to create ThreadPoolTaskExecutor?

Question

After upgrading Spring versions, I noticed that SecurityContextHolder.getContext() was null inside an AuditorAware type used as part of an @Async method.

Following some answers, here, I added these to my Spring Boot Application class: ...

@Bean
public Executor threadPoolTaskExecutor() {
    ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
    executor.setThreadNamePrefix("Async-");
    return executor;
}

@Bean 
public DelegatingSecurityContextAsyncTaskExecutor taskExecutor(ThreadPoolTaskExecutor executor) { 
    return new DelegatingSecurityContextAsyncTaskExecutor(executor); 
}

...And everything runs great!

However, given that the Async methods were already being executed asynchronously without the creation of a ThreadPoolTaskExecutor Bean, shouldn't I be able to @Autowired that Bean/Component for my DelegatingSecurityContextAsyncTaskExecutor, instead of having to create a new ThreadPoolTaskExecutor?