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I participate in a “Deadpool” at work, has to be celebrities/notable people (like prominent politicians, newsmakers, world leaders). 
Death is a part of life. To me, it’s only tragic if someone passes ahead of old age, or by accident/criminal acts. Natural causes at advanced age is just part of being human.
it will be less odd in 20-30 years when the "celebrities" of this era start croaking.  The entertainment industry is so balkanized only a very small portion of the population will care when Jake Paul and Shia LeBouf die 
Most of the world will reply with,"Who"?  
It's only a phenomenon right now because a lot of the celebrities dying were uber popular in the 70's and 80's when the US had three TV channels and everyone watched the same movies at the drive in.  And American entertainment dominated global culture - even steelworkers in East Germany watched Full House broadcasts that leaked over from the West.
They would know who you were talking about that Danny Tanner died this year.  
No one in Poland today would have any idea who most the US tv stars are today. each show gets so few viewers compared to the old days >

I never understood the infatuation people have with Hollywood personnel. They could all pass away and it would have zero effect on my life. These celebrities won't care when you die. All they do is a read a script for a living. That's not a notable profession to me. To each their own. >

notable or not, they chose a high-profile profession, which means more people know they exist. since more people know they exist, more opinions of all types are formed about them (love, hate, apathy, etc). i don't think that's a reflection of their character - just a statistic.