"why is this games acronym so many"
Short answer, why not.
S.T.A.L.K.E.R. stands for "Scavengers, Trespassers, Adventurers, Loners, Killers, Explorers, Robbers".
If you take every letter and convert it to its numerical value in the alphabet, then sum the results it totals 86. The Chernobyl nuclear power plant catastrophe occurred in 1986.
“The time has come for us to move beyond seeing public health as the ax in the display case, where the sign says IN CASE OF EMERGENCY, BREAK GLASS.”
Pandemics don’t end because the economy is suffering and we want them to.