Not really true IMO, because you can even use initialisms to type entire phrases and sentences in pinyin and omit most of the characters.
Let's say you wanted to write 我很喜欢吃汉堡 (I really like eating hamburgers), you can get away with just typing 'w h x h ch han bao' and predictive text gets you the entire sentence.
Chinese text is well optimized towards readability and information density, at the expense of taking a lot of work to manually write, but that calculus completely changes if your writing system is smart enough.
Let's say you wanted to write 我很喜欢吃汉堡 (I really like eating hamburgers), you can get away with just typing 'w h x h ch han bao' and predictive text gets you the entire sentence.
Chinese text is well optimized towards readability and information density, at the expense of taking a lot of work to manually write, but that calculus completely changes if your writing system is smart enough.