Appeared the first real keygen to WinRAR, the digital signature is no longer relevant

Recently, in the tape I saw the congratulation of Eugene Roshal on his birthday, was glad for the person. He did a lot of good and useful for the IT-community. And here I come across sensational news. It turns out that the first working keygen for WinRAR appeared. What does it mean? This means that the meaning is lost in the digital signature, which was the guarantor of the fact that the archive was created by who it was supposed to be. Now, anyone can generate any key for themselves and forge a signature. It seems to me, on the face of hacking the site and the registration mechanism.

Well, actually the hero of the occasion himself: WinRAR.v3.80_KEYGEN-FFF

PS: WinRAR I bought and this news is relevant for me. How will Roshal, will give out new keys to all registered? The algorithm will need to be changed. In general, while there are more questions than answers.