I carry this lock which weighs 1.90 kg plus a cable which weighs 0.52 kg. So converted to pounds that would be 5.3 lb total weight.
I'd rather carry all that weight than deal with the total pain in the ass of buying a replacement touring bike in a developing country.
https://hiplok.com/product/hiplok-d1000/
https://www.kryptonitelock.com/en/pr...l?type=bicycle