I mean, I hear a lot of people saying that they interpret him as a NPE since he had really mourned over his Dad's death (I also believe he was suffering because of that and genuinely was heartbroken). And that his Death in the Anime (I say it once again, in the Anime) is supposed to make us feel bad for him. I mean, I also interpret him as a NPE-like villain, because he may have called his Dad "a fool" but still, even if he called him fool I believe it was because he thought that his view on the world and that killing the criminals is bad, and not to show that he doesn't care for him anymore. And therefore, it means that he couldn't be PE anymore. And okay, but what if someone says that Light wanted his Dad to reveal Mello's real name and that was why he was crying, not from his Dad's death but from him not knowing Mello's real name? Well, it's quite easy: These two things don't contradict each other. Light could feel sorrow after he witnessed Soichiro's death, but also that he didn't reveal Mello's name. I think that Light didn't only want to kill Mello for being against him, but also for threathening lifes of his loved ones.
I don't think that since Light was proposed almost 5 years ago on this wiki, it would mean that he can't be removed and made to permanently stay on Pure Evil wiki. Like, a lot of villains were proposed a long time ago here, but ultimately got removed. For Example Bellatrix. Also, to not make anybody mistaken, I believe that only the Anime Light Yagami should be removed from the Pure Evil category and instead moved to Near Pure Evil.
So in short, I just think that Light genuinely cared and loved his family. And since he refused to kill his loved ones, it means there is still at least one redeeming quality left in Anime Light Yagami. Even if he didn't show it, it's still strongly implied he cared about them nontheless and if he expresses at least 0.0001% sorrow for his Dad's death, and 0.000000000001% care about his family, it means he can't be Pure Evil. The same mechanism with AFO who was removed from Pure Evil wiki after it was 100% sure he still cared about Yoichi in his own twisted way.
REMEMBER!
It's just my own opinion (and question as well, lol), and if you disagree with my view on Light, It's 100% okay. If you'll show me some counter arguments to why I am wrong, I'm happy to know what you think. And don't take this as some serious petition to un-PE Light Yagami, but just Pure curiousity from a Newbie who isn't even allowed to make proposals XD.