Understand that some customers do not need the latest devices or flagships depends on needs/budget. However some older devices will have few updates and going back as far as 2017 could end being a false economy. I would recommend purchasing fairly new devices generally if possible,especially if can receive discounts or sell an older model.
I do not work for Samsung or make Samsung Products but provide independent advice and valuable contributions.
My Device- S21 Ultra 5G ( SM-998B/DS ) CSC= BTU , 12GB/256GB
One Ui 5.0,Android 13 .