I only went through ego death one time on LSD, which gave me some work to do about my personality and life as well, but in the end it turned out to be the very best that could happen to me.
So, people condemning drugs, because of "reasons", just don't know what they are missing.
It's all in the usage, like with guns. Nobody has to use em, but if only used for (ethical) goodness, nobody would be afraid of them either.
How would we know if our ego is too strong and/or needs to be put in check?
I suppose we only know after it has been put in check that it needed to have been put in check. Perhaps?
Strong egos can sometimes be helpful, depending upon what is being attempted to achieved.. and surely, there can be strategic deployment of ego - depending upon if a guy/gal might be trying to sell something to another person or to persuade them of something - of course, in working relations these matters can be helpful, such as: "how to win friends and influence people."