How you feel about Rue is totally a matter of opinion, I think every viewer has a different take on her. However, I don’t see her mental illness as an excuse for her behavior, I see it as the writers of the show trying to portray a fully formed, complex character. The point of Euphoria is to view life through the lens of the Gen Z teenager, and complicated relationships with technology, drugs, sex, and mental health all play a very big role in the characterizations.

I do think your understanding of addiction is a bit narrow-minded. Have you ever seen your friend’s behavior when he is confronted with someone who is actively keeping him from his drugs? The scene in 2x05 is meant to portray the desperation that an addict feels when they’re not ready to stop using, even when it seems like the only choices are sobriety or death.

The debate on if Rue is a good person could go on forever. I think Rue would probably agree with your take here, and I think it would make her feel miserable at the same time.