Earlier quoted context omitted.
Not sure this approach really accounts for the difference between a language like German where you have one compound word for a concept that would require multiple words in English. For one good example, the German "Nomenkompositum" is "compound noun" in English.
Some giant portion of English vocabulary actually are compound words. English loves using compound words but only if the roots are sourced from Latin or Greek : words like electrocardiogram ("electronic heart picture", sourced from Greek), agriculture ("field nurturing", from Latin), and telecommunication ("far sharing", a hybrid of Latin and Greek roots). Probably the overwhelming majority of the words in an English…
This is false; English loves using compound words. One example of such a compound word is "fire department", which has identical syntax to the German compound "Feuerwehr". Whether a compound word is spelled with or without internal spaces is not a fact about the language, it's a fact about the spelling.