"Building the web app in Rails took me 2 days – the same thing in Node would have taken 2 weeks"
From my experience with Rails and Node, I could not believe a Node framework, e.g. Nestjs takes 5x more effort than Rails (nothing against Rails, it's a perfectly fine choice today for projects).
Yes, the author also mentioned login and NestJS has built in PassportJS integration, which in turn has a supported OAuth2 module so the end result is you can hook up authentication for most major providers in 20 minutes (with working sessions too).
From my experience with Rails and Node, I could not believe a Node framework, e.g. Nestjs takes 5x more effort than Rails (nothing against Rails, it's a perfectly fine choice today for projects).