Some main perceived advantages of punctuation-heavy syntax are that:
- it tends to fit more functionality into a smaller screen space;
- it's usually easier to scribble out on paper;
- it can avoid visual noisiness in the code.
Some disadvantages are that:
- there is a learning curve for meaning of symbols;
- certain symbols are relatively more difficult to enter on a standard keyboard;
- there is no standard and obvious names or pronunciation for code elements.
There are older languages that exemplify both extremes.
COBOL is wordy to the extent it almost acquires the property of being grammatically correct English - carrying the full overheads of natural language, though without anything like the full expressivity.
APL is so terse as to be almost unreadable, a quality that was widely regarded as having harmed not just the language but the credibility of its tenets more broadly.
The outer limits nowadays are regarded as being somewhere between Basic and C.
In my view, the relative advantages of punctuation-heavy languages have reduced over time:
Screens have become much larger - enough that using a short word is no longer a real penalty against using a symbol.
Speaking about code has become far more important than handwriting or printing the code itself - emphasising standard vocabulary and pronounceability, rather than speed of writing out and compactness.
Code colourisers have made wordiness less visually ambiguous and cluttering.