Earlier quoted context omitted.
Yea it goes further than that in Arabic. In the example of r s e only vowels were modified for tense in Arabic you will add consonants to radically change the meaning. Same in hebrew as another commenter showed much better than I did
Changing the vowel to form a causative verb from a base verb goes a little farther than "only vowels were modified for tense". It's a productive system in modern Arabic and a fossil of earlier times in modern English, but it's not different in kind.
For example the word (as written) k-t-b (كتب) means "write" but could just as much mean letters, writer, books etc; these stems are really how you think of the word at a much deeper level than you get out of English etymology[+] or (IMHO) Hanzi radicals. Arabic has some limited case, but the grammar is quite different from PIE languages, lacking a "to be" verb and adjectival/adverbial distinctions (a fast car and a car that was swift are differentiated only by the article).