Many famous movie stars and singers  are “shorted-life”. Agree?

Yes, many do have short lives.

Unfortunately, many non famous people also have short lives. Not everyone manages to live to old age.

We hear about the deaths of young entertainers because there are notable and not common.

Some of the deaths you mentioned were accidents (Kobe Bryant, Bruce Lee, Wong Ka Kui), meaning that the health (mental and physical) of the individual did not result in their death.Lincoln and Kennedy were never actors or entertainers. They were assassinated because they were President of the United States. Ronald Reagan (actor turned president) survived his attempted assassination and he lived to age 93The entertainment industry in general is not even on the list of dangerous careers. The construction field has thousands of workers worldwide die, but you never hear about those because the people were not famous.
https://www.usatoday.com/story/money/careers/2018/01/09/workplace-fatalities-25-most-dangerous-jobs-america/1002500001/

100000 of people die much to young daily.
If you were a sports person or a musician, which I am, would you get anywhere near a helicopter?
60,000 parts moving in close formation. I won't, and when I was going I jumped and fast roped out.

I've seen a lot of death. I may or may not have caused a few deaths. What I have learned is this. When your number is up, it's up. Nothing is going to stop your death.
Live every minute like it is your last because it very well may be.

I disagree. There are celebrities who lived well into their 90's.

I would say this happens no more frequently to famous people than non-famous people.

Kirk Douglas just passed away, he was 103... 

Kobe Bryant, Abraham Lincoln and John Kennedy are movie stars?