Not only do they not use C++, but they insist on an object orientated-like toolkit in C.
This is possible, but they decided not to use types, only void *s. This makes development slow and bug prone. It's pretty much the worst way you could choose to implement a toolkit.
You might complain about Qt but it's lightyears ahead of ETL.
Other posts on the same site say that Samsung management ignore non-Koreans and they use Excel spreadsheets to diff source code. Their working culture is pretty bad.