I just finished scanning the paper. I personally don’t find it to be that well written. The paper’s last sentence states: Taiwanese has already started its decline towards inevitable extinction, and unless the young generations are given the means to make Taiwanese a nationally functional language, the outlook for Taiwanese is very poor.
If the decline is “inevitable”, as the author writes, then there is nothing anyone can do (even the younger generation) to reverse this decline. Thus, the outlook being “very poor” is self evident. If something can be done to reverse the trend, then its decline towards extinction is obviously not inevitable. The usage of “extinction” is also a hyperbole.
But that issue aside, I find the author treating Taiwanese as a “language” to be misleading. Taiwanese is in fact a variant/dialect of a language (Minnan) spoken by 49 million people around the world (much like Americans speak variants of English). Taiwan accounts for just over one-third of the speakers of this language. The author would do well to replace “language” by another term in the title or to simply omit it altogether.