is this the fastest checkmate by taking something with a pawn

Because all GMs say so, and I made a study on every opening and have it stored in my base. My study included engine use, of course.

And what do Chessbase Livebook base their evaluations on?

Rating is not the point, the point is that looking at the engine on move 4 or 5 is pure idiotism.

Go ask them. Probably on the game and analysis history.

Also, I think you should join my Opening Theoreticians team. I'm sure we can have nice theoretical discussions like this.

Also, I am pretty sure Magnus games that you sent were not on standard time control.

I like your persistence, but looking at the engine so early is not for advice.

Engines even say that e4 c5 is 0.5, then they calm down.

Carlsen played it on several occasions in long time control. In the past Botvinnik, Bronstein, Euwe, Alekhine played it. Several subtop grandmasters also play the Dutch, not only the Stonewall f5, e6, d5, c6, but also the Leningrad f5, g6, Bg7 and the Classical Dutch f5, e6, d6. It is also an excellent opening against engines: in the closed position that result the engine has no clue what to do.

All correct @tpr but Carlsen only played the Dutch against weak players like Anand or Caruana who "play garbage" to quote #16.
Seriously, this discussion hurts while reading it. :D