When Bitcoin was five years old (2014), it was perfectly possible to run the Bitcoin client on a computer and use it as a self-custodial wallet through the GUI without ever having to use the command line. There were mobile wallets (blockchain.info for iOS/Android and Andreas Schildbach's wallet for Android, among others). As for cold storage, it was possible to create paper wallets using bitaddress, and Trezor was starting to sell their first hardware wallet.

I get that we have to be patient with (Lightning) adoption, but why does the author have to lie and provide false information? To present a rosy picture about the state of Bitcoin and hide the possibility that maybe adoption is going slower than expected? I wonder if the author was even using Bitcoin when it was five years old.