Question for Narcs: what if you DO get the attention?

My (I believe HPD or NPD) ex has recently had a lot of success getting attention as a performer in terms of audience, press etc. He's in a relationship with the woman he was seeing before me. I'm happy for him and hope it will contribute to his self-esteem improving. You think that may be the case? Or will it just enable his flailing and attention-seeking further?
When we were together his success had just started and as I recall he couldn't stop asking everyone: "wasn't it great? Wasn't it great?"
-It was great, and we all told him countless times.