Since it is from the constructionist tradition, I believe it is intended as a "microworld" [1] so being powerful and general purpose is an anti-goal. It is optimized for trial-and-error exploration, which works best when the functionality is reduced and there are not too many tools in the shed.

Producing text and formatting strings is likely deemed out of scope for that reason. People figuring out clever workarounds is a bonus!

1: https://edutechwiki.unige.ch/en/Microworld

edit: better link