I assume you mean if the DLC lasts or is durable. Don't you?
The current DLC like applied in Noob 026 are a durable coating and without problems for daily use. The coating is harder than SS. No worries about.
But it is thin and fragile you cannot hitting it with a sharp object or try to scratch it with a sapphire. You could broke the coat
For regular use DLC is perfect and will last many years.
ALE