Im not the poster you quoted, but I can see where access could be an issue.Are you saying these people without ready access to condoms also do not have access to a retail store, or drugstore, or convenience store?
Most who have been saying to just let a son buy them himself have said so because it would be embarrassing for his mom to bring it up. Many teens who do not drive (especially those in rural areas) may not have easy access to a store except when they are out with their parents.
If it’s inappropriate or embarrassing for a mom to buy condoms and casually give them to her son “just in case”, I would think it would be exponentially more awkward to expect the kid to buy them himself on a family shopping trip or to explicitly ask his parents to drive him to the store so he can purchase condoms.