Please don't go down that road. The ego is one and only. I replied to your post precisely because it sounded like there is you and your ego. There is only one "I" here, no matter how complex it may appear. The screen is one, no matter which movie is playing. So, you can have one dominant part today and another tomorrow. Yet, is it you or just the "movie"?
Yes I know why you replied to mine ,

your thumbnail is a hindu deities , sheba ? And the" I am I " gives it away .
Honestly I believe if there is a people who have got it right , i would put my money on the Hindu teachings.
I don't think there question was about the ego
The question asked was , does ego death happen every time there is a breakthrough.?
It appears they are new to DMT and I don't think they are talking about the ego .
I think they are talking about fear , they are saying : is it going to be scary Everytime I breakthrough ?
No not always , Its the fear that he learn to leave at the door , the fear is what panics when breaking the threshold.
And if you manage to breakthrough , fear is gone .
We are all posesed by fear and courage , one will always keep the other in check .
Bit like two egos