The ego wants to get what it wants. It won’t satisfied or happy unless it gets what it wants.
The ego feels strong and powerful when it gets what it wants.
But, this is indeed being weak in our yoga practice.
We are over-powered by the ego and give in to the egoistic desires of craving and aversion.
Yoga enthusiasts with the strong egoism may feel satisfied and happy when their desires of craving and aversion are being gratified, through getting what they like and not getting what they don’t like, and attaining physical strength and flexibility through the regular yoga asana practice, but then it’s indeed a form of weakness on the path of yoga towards selflessness.