Needed to translate your post into English but from what I understand you are asking why AMD Download page for the R9 270 Driver is mentioning that the driver is in Legacy Status?
If that is the question is because all Non-RX GPU Cards were declared Legacy or Non-Supported GPU cards in 2021.
That means that AMD will not have anymore Driver updates for your GPU card. The last driver is from 06/2021.
If you need a newer AMD VGA Driver for your R9 270 then you would need to upgrade your GPU card to one that is still supported by AMD or try to find someone in the internet that has modified newer drivers to work with legacy GPU cards.
