Sure, except that narrative has too many flaws. Samsung China's smartphone sales increased from 11M in 2011, to 30M in 2012, to about 60+M in 2013 -- no such "drop" before Xi's rise. Then it cratered as Xi's anti-foreign "In China, For China" policy went in full swing. By 2016, Samsung's China sales figure was already down to just over 10M -- the Note 7 and THAAD were likewise inconsequential and Samsung smartphone sales continued to slide in China and China only. During this time between 2016-2017, Samsung's global sales continued to maintain its lead at around 310M even as its Chinese competitors, such as Huawei struggle against Samsung outside China without protection from Xi. Again, this conspicuous drop was in China only and there was no sudden change in consumer preference or product offering, as evident from Samsung's global sales -- ie, while Samsung China sales was down, it was up elsewhere. Xi's mercantile policies and the rising nationalism in China were the only changing variables.
Also it wasn't just Samsung alone either -- Apple was the next major foreign smartphone seller in China. Apple avoided Samsung's fate after Xi's rise in 2013 and Patrick McGee, a FT reporter, has recently released Apple in China: the Capture of the World's Greatest Company, meticulously detailing how Apple countered Xi's "For China, In China," but, by doubling down on China, Apple is in effect "captured" by Xi. see Chapter 26 "Despot" and on.