There's lots of questionable stuff on this page. I particularly objected to this which clearly isn't true in most English speech:

"Word spacing is crucial for the written form because it illustrates the sound of speech where audible gaps or pauses take place."

If I were reading it aloud, even for a presentation, the spaces between morphemes would be more like this:

"Wordspacing iscru'cial forthewri'ttenform be'cause itill'ustrates thesoun'dofspeech where audiblegaps or pauses takeplace."

where a ' is a shorted pause than a space. The length of the ' isn't really long enough to be called out as a pause, but it's definitely longer than between words which frequently run directly into the next.

Spacing is important, but it's as an aid to parsing a written sentence at speed, and almost nothing to do with showing the pauses between morphemes.