Any language takes some time to understand and even more to use effectively.

Understanding Vim's nOm command pattern is pretty easy (repeat n times operator O to text motion command m moves over). But using it effectively takes some practice. Committing it to muscle memory takes about 6 months (same amount of time it takes to master touch typing). You cannot do this faster.

Becoming an expert (which means not only effectively choosing and using commands to transform some text, but knowing a decent subset of entire functionality and also knowing how to extend the functionality) takes even more time.

And if your language were that primitive that mastering it can be done in a day or two, would it really be that complete and high level enough?