No, we cannot claim that one lock suites all needs and all situations, but what we can do is claim that one lock is better than another. After all, there is such a thing as a good lock and a bad lock; all locks are not the same. The more suited a lock is to protect one's bike while having functional portability the better the lock. Yes, a Kryptonite NYF just might be too much for some people, but this would not mean that its not a "good" lock, it would only mean that it wasn't the desired lock for the situation. Locks must be judged by their ability to secure, the higher the security the better the lock, it doesn't matter if its not suited to our situation, what matters is if the lock can fulfill its purpose- to secure the bike. If we judge the quality of a lock according to the basis of our needs we will never be able to objectively judge a lock. Saying, for example, that a NYF is too heavy for our purpose does not qualify as an argument against the lock. Now, saying that the lock freezes or that it can be picked or broken easily is an argument against the lock. The fact is that while it might not be suited to our purpose or preference it can still be a great lock.

Respectfully
Jack