I'm a lawyer. I can tell you that two people can read a statute or an opinion and come to two different and somewhat legitimate conclusions. Now, I'm not a cons utional lawyer (though I did get an A in con law), but I have studied opinions. I'm no expert on the Supreme Court, but if you are a textualist, of course it's going to come against rights that are not enumerated in the cons ution. Likewise, if you believe in a living, breathing cons ution, then you will tend to interpret things as rights. Those two views can be opposed. But they also look at precedent, so it's not just what the Cons ution says or doesn't say.
Judges will tell you, and I believe them, that they do not let their personal beliefs into their analysis. I've wrote legal opinions that I disagreed with personally, but I knew that is what the law required. I think that can and does happen all the time on the Supreme Court.