That's because you're not smart enough to understand it
EDIT: This is the controversial opinions thread. If it is taking you this long to understand the premise of the thread (ie: People share opinions on metal you don't necessarily have and/or like), the problem is you. It's like you read the thread title and think 'Hmm, controversial opinions on metal. I wonder if the thread is people sharing the same opinions because that's not boring and expected. Seems like fun!' and then you come in and get butthurt or whine that you don't understand someone's opinion when the point of the thread is to share the opinions that no one would typically have.
Most opinions I share in this thread are ones I actually hold. Those could change in another 3-4 years. There are some I post as discussion points (ie: Ones I don't hold but think it's an interesting viewpoint).