That's interpreting a lot from just four words. Opinion probably wasn't the best word for what I was referring to, but more-so their reference point for claiming that it is arguably his best work. My comment may seem dismissive to someone who hasn't read PKD, but VALIS is generally never considered a contender for his best work. To suggest that it is seems absurd which is why I responded as I did.
I am torn on whether I used the word arguably correctly in my original comment. When I first posted it, I thought I could find many sources that had argued it was PKD's best work.
Upon trying to find those sources I could only find Terence Mckenna's article on it, in which he doesn't exactly argue that it is PKD's best work https://sirbacon.org/dick.htm
Perhaps I now believe that those who read the book and "got it" would argue that it's his best book and perhaps even the best title.
But part of me wondered just now if those sources were out there and now I cannot find them.