Computers are not the internet: you can have a lot of fun with computers and also programming them without the internet. Probably not if you need to make money from it, but as a hobby it is very much possible. There are a lot of environments that have docs included (game dev mostly, like pico8 etc), but languages like C, Go, lisp you can program on a deserted island far away from comm networks if you need to because they are small enough and have enough that can be carried with you. People had a lot of fun with computers before the internet. But yes going outside is a good plan anyway.
>>tluybe+(OP)
The internet isn't the corporate dystopia net either: you can also still have fun with running a server for an obscure game or setting up a blog without having your attention tracked and exploited for profit.