It's reputational hangover from I would say maybe the 80s. My experience in Japan was totally the opposite. Most people's emails are something like abc3fa3a11fe.afj.kl@softbank.co.jp because that's the email their phone provider gave them, and they don't know how to check their email if they lose their mobile phone. Internet access is sparse - not even the starbucks at the famous shinjuku intersection had wifi when I was there in 2014. If you want internet, you need to go to an internet cafe - those places that people sometimes just move into as cheap apartments. To do that, you need to register for a card... with a Japanese phone number and a Japanese bank.

You want any paperwork done, it'll involve a fax. No, scanning and emailing will not work, sorry. No, you can't just bring the paper in, it must arrive via the fax machine.

Japanese websites: https://randomwire.com/why-japanese-web-design-is-so-differe...

Etc.