When introduced properly, a crate can be a safe place for any puppy, particularly if they’re feeling tired or nervous. It gives them somewhere to retreat to when they’re not being supervised and can help settle a pup into a new environment. It can make travelling with a puppy a lot easier too.
In my experience, a dog crate can be a brilliant aid for toilet training puppies as it takes advantage of their den instinct. Most dogs won’t soil in their sleeping quarters, so using a crate can help form a distinction between where they should and shouldn’t go to the toilet.
But it’s important to note that crate training isn’t essential for any dog owner, it’s a choice. Decide what’s best for you, your dog and your home.