In fact, in my opinion it is less secure. I just created a throw-away Linux environment to do some off-site development. I used GitHub to clone some repos from the command line, and got the “Deprecation Notice” e-mail that many have seen.
So I read the advice, which amounts to:
“Don’t use your long, easily-remembered, but difficult-to-type pass-phrase that you’ve never told anyone as your password: instead use this password that we gave you, that will never change, and you have no hope of remembering so have to carry around with you everywhere in plaintext.”
How is my pass-phrase any worse than the fixed, never-changing (unless I change my actual password - ahem?) ASCII token?
“Use a password manager” seems to be a suggestion. This is a throwaway environment. You’re asking me to install additional software, and copy files from another machine? Maybe I should store my password manager database in a public GitHub repository then, so I can get it on whatever other machine I’m setting up. (Does the same database file work on both Linux and Windows?)
Sorry, but this is a step backwards in both security and convenience. Normally convenience is forced to give way to better security - but this reduces both simultaneously.