Racket vs DM

Racket is based on Scheme (LISP Family) and is very similar to Clojure. So there are a ton of (). The reason it is easier to learn is that it is not trying to be "Pure" if there is even such a thing in terms of Functional Programming. The great thing about Racket is it has everything included. You get DrRacket for developing programs. You want to add a picture to your software you can insert pictures. If you want to add libraries just open the package manager. The Syntax is an opinion but it really does feel easier to see what is happening since everything is in brackets)
Racket is a really a Programming Language for making Programming Languages. So there are smaller syntax Racket called Student Racket which makes things easier to pick up.

Realm of Racket teaches the big-bang approach for managing world state. It does so by walking the reader through the development of small games. There are few guidebooks that are as useful and entertaining.

Includes several free online books and great documentation.

Racket has an active community of users/developers that makes it easy to get help when needed.

Although syntax is different from that of mainstream languages, S-expressions are a perfect match to functional programming.

Racket is famously embedded in the game engine underlying Naughty Dog's Uncharted and The Last of Us games, because it proved to be so easy to embed.

DM and BYOND are constantly being developed and expanded, with feedback from the community, and Lummox as the lead developer.

The BYOND community is helpful, and has been active for decades, so there are many solutions available. You can find many answers in the forums.

Documentation is easy to learn, and can be found here.

Makes networking easy, so you can just make your game.

One of the easiest to learn languages. Similar to Python and C++.