Don't be so harsh. It seems to me that delays are quite common with these types of projects. The Taiwanese press really shouldn't be taken seriously. I think a bit of perspective is in order:
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KTX
wiki
After 12 years of construction, the Gyeongbu Line (connecting Seoul to Busan via Daejeon and Daegu) and the Honam Line (Seoul to Gwangju and Mokpo) opened on March 31, 2004. Using high-speed track for only a part of the distance (Seoul-Daegu), the new line cuts travel time between Seoul and Busan from 4 hours 20 minutes to 2 hours 40 minutes. A further improvement to a 1 hour 56 minutes is expected in 2008, when the train shifts to run fully on high-speed tracks.
Construction of the second phase linking Daegu and Gyeongju to Busan started in June 2002 and is expected to be complete by 2010.
12 years of construction to date and they're still working on the section linking Busan.
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Acela Express
wiki
High-speed service was originally expected in late 1999, but various problems appeared. The trainsets were four inches (about 10 cm) too wide to fully tilt, and as a result were unable to achieve the speeds originally intended. After a series of delays, the first Acela Express service began on December 11, 2000, a year behind schedule.
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THSRC
Track: 345 km of viaduct and tunnels
New Stations: 6
Construction: 6 years, 9 months (14 month delay to date).