I appreciate that this is quite low-friction. One click and I can see quick examples of bash (which I don't script enough in to be comfortable with the syntax).
But regardless I'm not super keen on cheat-cheets in general either.
1. Open browser -> Go to devhints -> search for "dd" -> select doc
2. Open term -> type tldr dd
Another thing that is missing is offline access, localStorage integrates in minutes...
I simply feel like this is someone trying to reinvent the wheel and also that this medium (a website) might not be the best way to do that. Sure it has a pretty frontend and a somewhat decent user experience for a web "app", but I (and probably many more devs) spend about 90% of my day in my terminal...
Yes, the benefit comes from already having it installed and knowing how to use it next time. I'm saying that the problem it solves isn't worth going through all that hassle even once.