Absolute time makes no sense to me

whoever is the first one to reach the end of time limit would be the one lose the game.
am i right? or i missed something?

yep, if someone uses all their time, they lose on time - like any time setting. Best not to accept or make games with time setting you don’t think you can handle.

It is extremely unpopular. I suggest just not playing it. Very few people do and they often have most of their wins from timeout. It works for chess, where there is an absolute end to the game and only so much messing around one can do. It doesn’t work very well for Go. You can make each and every game much more about extreme time management, especially with short time controls.