Originally Posted by
ISTFlyer
Dear folks,
Starting from 1 January 2021, Turkish Airlines would charge for advance seating on international flights as well. Passengers who hold Elite and Elite Plus status, Turkish Corporate Club members, and sailors would be still able to select standard (non-extra-legroom ) for free; however, all other passengers including non-TK Star Alliance Gold members would now need to pay for advance seat selection.
Sailors 
What's that all about ?? Any special arrangements for farmers?
Originally Posted by
ISTFlyer
Obviously, this only applies for Economy Class and Business Class seat selection remains unaffected.
Given that Qatar recently joined the BA approach to paid business-class seat reservations; the state of affairs you cite is no longer
obvious 
Depressing, isn't it. Makes you feel some gratitude to BA for allowing its elites unfettered access to all seating from the time of booking.