Holy cow. Why are you trying to make this a "problem with society" thing. No one needs the show to end how they want (hell I didn't even know how I wanted it to end...I still don't) but things happening without reason (or terrible reason) is just plain stupid. This show developed story lines and characters for 7 seasons and then many of them disappear or just transform magically in the last season.
Dany = always had her moral compass fixated on throne - blinded by power
Jon = never wanted power, just do the right thing
Varys = always conspiring, did him in finally
Tyrion = always wanted "the right ruler" - realized Dany is too much, led to his betrayal
Jorah = died defending his Queen
Euron = died chasing jerseys/pussy
Theon = died back "home"
Sandor = completed his redemption
Qyburn = killed by his Frankenstein
Cersei = only cares about her children/jaime..ultimate "cool customer" that finally breaks in terror in her moment of doom
Jaime = stupid, addicted to love, numerous poor decisions on Cersei's behalf - one finale Shakespearean relapse/downfall
In what way's have any of these "choices" for endings been unjustified? They've all be in the cards...Again, I would have played some differently, but this is a very justifiable ending.
(the REAL issues with the series has been the awful NK and Bran saga...garbage)