Personally, I prefer Pocket over Instapaper, but the value I gain from using it is largely the same as the points you make.
I've also explored using native Mac RSS reader apps such as Leaf or News Explorer because you can view the original article directly in the app if the parsed formatting is off.
So far most of the articles I've read have been formatted correctly, but I'm guessing it would miss out on things like syntax highlighting, which can be really helpful in a code dense article.
I've also explored using native Mac RSS reader apps such as Leaf or News Explorer because you can view the original article directly in the app if the parsed formatting is off.