The problem is an old and wonderful one -- how do you make it easier to get started with programming languages? (e.g. COBOL from the 60's where you describe arithmetic in words?) The desire to be “forgiving” of minor errors comes at the expense of precision of expression, and Hedy meets this head on!
They are deliberately matching this expression-precision trade off with well defined "levels" for learners to gain confidence without big jumps, scary failures, or large cognitive loads. Every time you discover a lack-of-precision need you discover a syntactic solution, and level up.
In essence, "how do you lower the floor while keeping the ceiling high?"